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I want to tell you a story about stories,
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and I want to tell you the story
because I think we need to remember
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that sometimes the stories
we tell each other
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are more than just tales
or entertainment or narratives.
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They're also vehicles
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for sowing inspiration
and ideas across our societies
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and across time.
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The story I'm about to tell you is about
how one of the most advanced
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technological achievements
of the modern era
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has its roots in the stories,
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and how some of the most important
transformations yet to come might also.
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The story begins over 300 years ago,
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when Galileo Galilei first learned
of the recent Dutch invention
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that took two pieces of shaped glass
and put them in a long tube
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and thereby extended human sight
farther than ever before.
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When Galileo turned
his new telescope to the heavens
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and to the Moon in particular,
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he discovered something incredible.
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These are pages from Galileo's book
"Sidereus Nuncius," published in 1610,
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and in them he revealed to the world
what he had discovered.
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And what he had discovered was that Moon
was not just a celestial object
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wandering across the night sky
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but rather it was a world,
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a world with high, sunlit mountains
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and dark mare, the Latin word for seas.
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And once this new world
and the Moon had been discovered,
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well, people immediately began to think,
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"We'll have to travel there,"
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and just as importantly,
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they began to write stories
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about how that might happen,
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and what those voyages might be like.
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One of the first people to do so
was actually the Bishop of Hereford,
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a man named Francis Godwin.
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Godwin wrote a story
about a Spanish explorer,
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Domingo Gonzalez,
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who ended up marooned
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on the island of St. Helena
in the middle of the Atlantic,
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and there, in an effort to get home,
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developed a machine, an invention,
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to harness the power
of the local wild geese
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to allow him to fly,
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and eventually to embark
on a voyage ot the Moon.
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Godwin's book, "The Man in the Moone,
or a Discourse of a Voyage Thither,"
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was only published posthumously
and anonymously in 1638,
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likely on account of the number
of controversial ideas that it contained,
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including the endorsement
of the Copernican view of the universe
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that put the Sun at the center
of the Solar System,
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as well as a pre-Newtonian
concept of gravity
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that had the idea
that the weight of an object
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would decrease with increasing
distance from Earth.
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And that's to say nothing
of his idea of a goose machine
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that could go to the Moon.
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(Laughter)
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And while this idea of a voyage
to the Moon by goose machine
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might not seem particularly insightful
or technically creative to us today,
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what's important is that Godwin described
getting to the Moon not by a dream
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or by magic, as Johannes Kepler
had written about,
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but rather through human invention.
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And it was this idea,
that we could build machines
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that could travel into the heavens
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that would plant its seed
in minds across the generations.
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The idea was next taken up
by his contemporary, John Wilkins,
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then just a young student at Oxford,
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but later one of the founders
of the Royal Society.
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John Wilkins took the idea of space travel
in Godwin's text seriously,
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and wrote not just another story
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but a nonfiction philosophical treatise
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titled "A discovery of a new world,
or, a discourse tending to prove
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that 'tis probable there may be
another habitable world in the moon."
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And note by the way that word "habitable."
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That idea in itself would have
been a powerful incentive
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for people thinking about how
to build machines that could go there.
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In his books, Wilkins seriously considered
a number of technical methods
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for spaceflight,
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and it remains to this day
the earliest known nonfiction account
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of how we might travel to the Moon.
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Other stories would soon follow,
most notably by Cyrano de Bergerac,
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with his "Lunar Tales."
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By the mid-17th century,
the idea of people building machines
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that could travel to the heavens
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was growing in complexity
and technical nuance.
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And yet, in the late 17th century,
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this intellectual progress
effectively ceased.
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People still told stories
about getting to the Moon,
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but they relied on the old ideas
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or, once again, on dreams or on magic.
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Why?
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Well, because the discovery
of the Laws of Gravity by Newton
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and the invention of the vacuum pump
by Robert Hooke and Robert Boyle
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meant that people now understood
that a condition of vacuum
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existed between the planets,
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and consequentially
between the Earth and the Moon,
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and they had no way of overcoming this,
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no way of thinking about overcoming this.
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And so for well over a century,
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the idea of a voyage ot the Moon
made very little intellecutal progress
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until the rise of
the Industrial Revolution,
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and the development
of steam engines and boilers,
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and most importantly, pressure vessels.
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And these gave people the tools to think
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about how they could build a capsule
that could resist the vacuum of space.
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So it was in this context, in 1835,
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that the next great story
of spaceflight was written,
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by Edgar Allen Poe.
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Now, today we think of Poe
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in terms of gothic poems
and telltale hearts and ravens,
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but he considered himself
a technical thinker.
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He grew up in Baltimore,
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the first American city
with gas street lighting,
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and he was fascinated
by the technological revolution
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that he saw going on all around him.
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He considered his own greatest work
not to be one of his gothic tales
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but rather his epic prose poem "Eureka,"
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in which he expounded
his own personal view
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of the cosmographical nature
of the universe.
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And in his stories he would describe
in fantastical technical detail
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machines and contraptions,
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and nowhere was he
more influential in this
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than in his short story,
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"The Unparalleled Adventure
of One Hans Pfaall."
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It's a story of an unemployed
bellows maker in Rotterdam
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who, depressed and tired of life --
this is Poe, after all --
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and deeply in debt,
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he decides to build a hermetically
enclosed balloon-borne carriage
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that is launched into the air by dynamite
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and from there floats
through the vacuum of space
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all the way to the lunar surface.
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And importantly, he did not
develop this story alone,
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for in the appendix to his tale,
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he explicitly acknowledged Godwin's
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"A Man in the Moone"
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from over 200 years earlier
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as an influence, calling it "a singular
and somewhat ingenious little book."
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And although this idea of a balloon-borne
voyage to the Moon may seem
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not much more technically sophisticated
than the goose machine,
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in fact, Poe was sufficiently detailed
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in the description
of the construction of the device
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and in terms of the orbital
dynamics of the voyage
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that it could be diagrammed
in the very first spaceflight encyclopedia
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as a mission in the 1920s.
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And it was this attention to detail,
or to verisimilitude, as he called it,
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that would influence the next great story:
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Jules Verne's "From the Earth
to the Moon," written to 1865.
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And it's a story that has
a remarkable legacy,
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and a remarkable similarity
to the real voyages to the Moon
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that would take place
over a hundred years later,
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because in the story,
the first voyage to the Moon
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takes place from Florida
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with three people on board
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in a trip that takes three days,
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exactly the parameters that would prevail
during the Apollo program itself.
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And in an explicit tribute
to Poe's influence on him,
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Verne situated the group responsible
for this feat in the book in Baltimore,
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at the Baltimore Gun Club,
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with its members shouting,
"Cheers for Edgar Poe,"
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as they began to lay out their plans
for their conquest of the Moon.
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And just as Verne was influenced by Poe,
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so too would Verne's own story
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go on to influence and inspire
the first generation of rocket scientists.
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The two great pioneers of liquid fuel
rocketry in Russia and in Germany,
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Konstantin Tsiolkovsky and Hermann Oberth,
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both traced their own commitment
to the field of spaceflight
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to their reading
"From the Earth to the Moon"
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as teenagers
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and then subsequently
committing themselves
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to trying to make that story a reality.
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And Verne's story was not
the only one in the 19th century
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with a long arm of influence.
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On the other side of the Atlantic,
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H.G. Well's "War of the Worlds"
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directly inspired
a young man in Massachusetts,
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Robert Goddard.
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And it was after reading
"War of the Worlds"
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that Goddard wrote in his diary,
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one day in the late 1890s
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of resting while trimming
a cherry tree on his family's farm
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and having a vision of a spacecraft
taking off in the valley below
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and descending into the heavens,
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and he decided then and there
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that he would commit the rest of his life
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to the development of the spacecraft
that he saw in his mind's eye.
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And he did exactly that.
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Throughout his career,
he would celebrate that day
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as his anniversary day,
his cherry tree day,
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and he would regularly read and re-read
the works of Verne and of Wells
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in order to renew his inspiration
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and his commitment
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over the decades of labor
and effort that would be required
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to realize the first part of his dream:
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the flight of a liquid fuel rocket,
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which he finally achieved in 1926.
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And so it was while reading
"From the Earth to the Moon"
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and "The War of the Worlds"
that the first pioneers of astronautics
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were inspired to dedicate their lives
to solving the problems of spaceflight.
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And it was their treatises
and their works in turn
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that inspired the first
technical communities
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and the first projects of spaceflight,
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thus creating a direct chain of influence
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that goes from Godwin to Poe to Verne
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to the Apollo program
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and to the present-day
communities of spaceflight.
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So why I have told you all this?
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Is it just because I think it's cool,
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or because I'm just
weirdly fascinated by stories
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of 17th and 19th century science fiction?
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It is admittedly partly that,
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but I also think
that these stories remind us
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of the cultural processes
driving spaceflight
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and even technological
innovation more broadly.
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As an economist working at NASA,
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I spend time thinking about
the economic origins
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of our movement out in the cosmos,
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and when you look before the investments
of billionaire tech entrepreneurs,
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and before the Cold War Space Race,
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and even before the military investments
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in liquid fuel rocketry,
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the economic origins of spaceflight
are found in stories and in ideas.
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Because, it was in these stories
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that the first concepts
for spaceflight were articulated,
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and it was through these stories
that the narrative
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of a future for humanity in space
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began to propagate from mind to mind,
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eventually creating an intergenerational
intellectual community
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that would iterate
on the ideas for spacecraft
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until such a time
as they could finally be built.
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This process has now been going on
for over 300 years,
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and the result is
a culture of spaceflight.
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It is a culture that involves
thousands of people
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over hundreds of years,
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because for hundreds of years,
some of us have looked at the stars
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and longed to go,
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and because for hundreds of years,
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some of us have dedicated our labors
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to the development
of the concepts and systems
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required to make those voyages possible.
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I also wanted to tell you
about Godwin, Poe and Verne
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because I think their stories
also tell us of the importance
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of the stories that we tell each other
about the future more generally.
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Because, these stories don't just
transmit information or ideas.
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They can also nurture passions,
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passions that can lead us
to dedicate our lives
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to the realization of important projects,
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which means that these stories can and do
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influence social and technological forces
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centuries into the future.
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I think we need to realize this
and remember it when we tell our stories.
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We need to work hard to write stories
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that don't just show us the possible
dystopian paths we may take
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for a fear that the more dystopian
stories we tell each other,
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the more we plant seeds
for possible dystopian futures.
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Instead we need to tell stories
that plant the seeds,
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if not necessarily for utopias,
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then at least for great new projects
of technological, societal,
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and institutional transformation.
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And if we think of this idea
that the stories we tell each other
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can transform the future
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is fanciful or impossible,
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then I think we need to remember
the example of this,
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our voyage to the Moon,
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an idea from the 17th century
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that propagated culturally
for over 300 years
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until could finally be realized.
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So, we need to write new stories,
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stories that 300 years in the future
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people will be able
to look back upon and remark
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how they inspired us
to new heights and to new shores,
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how they showed us new paths
and new possibilities,
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and how they shaped
our world for the better.
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Thank you.
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(Applause)