Please join my mailing list here 👉 https://briankeating.com/list to win a meteorite 💥 How did a simple pair of eyeglasses change the course of history? In this episode of Into the Impossible, we will explore how lenses revolutionized not just our vision, but our understanding of religion, science, and our place in the universe.
We begin with the 1455 printing of the Bible by Gutenberg, which made scripture accessible to the masses. But with this newfound clarity came a new problem: if you couldn’t read it, you couldn’t be saved. This triggered the rise of optical lenses, first to correct vision and then to unlock new worlds—both microscopic and cosmic.
Alongside the optical innovations in the Netherlands, key figures like Spinoza and Galileo used lenses to explore controversial ideas that challenged the church’s teachings, propelling humanity into the scientific revolution. The episode traces how these developments paved the way for modern science, and how the legacy of these discoveries continues today.
Join us as we explore the history of one of the most important inventions of humankind!
Key Takeaways: 00:00 The Bible before and after Gutenberg a test of vision 02:09 The rise of eyeglasses 05:17 The evolution of lenses 10:40 Galileo’s revolutionary telescope 13:42 Fundamental questions and the role of scientific exploration 14:37 Outro ➡️ Follow me on your fav platforms:
The moment the lens was born, the Bible
caught fire and the universe was cracked
open. There are some books here never
meant to read. For centuries, one was
locked away, not by chains, but by
blindness. The words were always there,
but the world couldn't see them clearly.
And when we finally did, the truth
spilled out across parchment, across
glass, across the cosmos. One simple
invention shattered scripture and
revealed a deeper order hiding in plain
sight. And the universe was never the
same again. For centuries, the Bible
wasn't just sacred. It was off limits.
Most people had never even laid eyes on
it, let alone read it. For over a
thousand years, it was copied by hand,
line by line, letter by letter. Every
version was a little bit different. Some
pages were smudged. Others were missing
altogether. The word of God lived in
fragments. Then came Gutenberg in 1455.
He printed the Bible for the very first
time. Every copy was identical. And
suddenly anyone could see what they were
told to believe. But here's the catch.
What if the book was clear, but your
vision wasn't? Because if you couldn't
read the word, salvation fell farther
out of reach. They reached for lenses.
They just wanted to see the word more
clearly, but they had no idea what they
had unlocked. This story isn't just a
story of salvation in the Bible. It's a
story of a lens. A lens that cracked the
church. In 1455, Gutenberg printed the
Bible. And for the first time, every
copy looked the same. Word for word,
line for line. And suddenly, what had
only been heard could finally be seen.
The deeper humanity looked into books,
into blood, into cells, into stars, the
harder it became to hold the truths we
once called sacred. By the 1700s, Europe
wasn't even reading the Bible
necessarily to obey it. They were
reading to test it. What used to be
gospel was now a hypothesis that you
could test and possibly prove wrong.
People no longer accepted truth just
because a priest said it. They wanted
evidence. They wanted to see it clearly
for themselves. The scientific method
roared throughout Europe. But that
clarity came with a twist. The book was
clear, but your vision wasn't. And
suddenly, bad eyesight wasn't just
frustrating. It was a barrier to
knowledge, to power, to salvation
itself. If you couldn't read it, you
couldn't be saved. That pressure
triggered something new. Supply and
demand. Glass makers fusing silica.
Flamelit workshops glowing in the night.
Eyegelasses weren't new in Gutenberg's
time. They had appeared almost two
centuries before in 1285. First in Pisa
and in Venice. They were crude convex
lenses held in leather or bone frames,
not the kind you can get at lens
crafters. Monks used them to copy
scripture. Merchants used them to tally
ledgers, but they were rare. Functional,
sure, essential, not yet. One man could
read effortlessly while the other one
would squint, but Gutenberg put things
in sharp focus. First the Bible, then
everything else. The word went viral.
Books spread like wildfire. and so did
the pressure to read those books. But
here's the problem. If the print was
sharp and crisp, but your eyes were
blurry and confusing, the problem wasn't
the book, it was you. People realized
their eyes couldn't keep up. Eyeglasses
stopped being curiosities. They became
keys to scripture, to society, to the
future. And across Europe, the race
began not just to make more lenses, but
to make them better, higher powered,
clearer glass. And by the 1400s, guilds
in Nuremberg were mass- prodducing rivet
spectacles, wearable, repeatable,
revolutionary. It's hard to overestimate
how much the eyeglasses changed the
world. But the materials were uneven.
The glass could be cloudy. And for most
people, vision correction was still
mostly trial and error. Precision glass
wasn't a luxury anymore. It became
survival technology for the masses,
equal parts salvation and status. And
then the Dutch stepped in.
Now why did the Dutch make the best
glass on earth? The Dutch were masters
at traders. The Dutch East India Company
built cities like Amsterdam, Middberg,
Del. Merchant ships were gliding in and
out with the raw materials to make
glasses. But only the Dutch turned this
into a national obsession. They didn't
just want to fix your eyesight. They
wanted to build a merkantile empire upon
it. So by the early 1600s, these cities
like Amsterdam weren't just trade hubs.
They were optical R&D laboratories. And
here's how the Netherlands became the
Silicon Valley of lenses. Most countries
that wanted to produce glasses had to
work with whatever sand and soot they
could find around. But the Dutch had the
East India Company, the world's most
powerful trading company. And that gave
them worldwide access to Bohemian
crystal, to Venetian soda ash, to quartz
sand so pure they needed almost no
refining whatsoever. Liquid glass would
swirl in huge melting pots sand while
others prayed for clarity the Dutch
could engineer it, controlling
thickness, purity, and strength. They
were building optics with militarygrade
precision. And the mass literacy that
was brought on earlier created mass
demand for their products. In most of
Europe, salvation was preached in Latin.
But in the Netherlands, Calvinism taught
that you had to seek salvation yourself
through inquiry. And that meant reading,
learning, and developing your own ideas.
Suddenly, scripture wasn't ceremonial.
It was personal. And if you couldn't
see, you couldn't read. And if you
couldn't read, well, you know the rest.
Reading became an almost spiritual duty.
And it had a spin-off event into
research into the heavens itself. and
the questioning of what that very first
Bible really told us about the
scientific structure of the universe. In
the Netherlands and places like Delft
and Middberg, something rare happened.
Craftsmen lived together and worked
within shouting distance of each other.
Glass blowers right next to lens
grinders. Instrument makers ricocheting
ideas from one bench to another. One
guild would improve clarity. Another
would push on magnification. Another
would push on frame technology and
stabilization. And that's where these
workshops led to legends like Hans
Lipcheet who filed for a patent in
October6008 for a lens that could pull
distant objects near a telescope, a
perspective tube. He wasn't the only
one, but the Dutch paid him as if he was
anyway, and his telescope took off. The
Steve Jobs of the Silicon Valley of the
Netherlands of the 17th century.
Meanwhile, Zacharias Jensen and his
father were stacking lenses, testing
what we now call the compound
microscope, made of multiple lenses. The
records, like the lenses before them,
are somewhat hazy. But something
worldchanging was brewing. The
microscope, the telescope, suddenly
Dutch lenses weren't just correcting
vision. They were extending our senses
outward to the stars and inward to the
building blocks of life itself. And what
they revealed was astounding and
threatening as well. While much of
Europe was shutting its doors, the Dutch
opened theirs. They welcomed Jews,
Hugenats, and anyone with radical ideas.
Like a young man named Maruk Spinosa. At
23, his own synagogue had excommunicated
him for asking the wrong questions.
Questions like, "What if God wasn't a
man incarnate? Well, what if God was
part of the natural order of nature?
What if scripture was historical
document, not the divine word of God?
You wouldn't need to ask priests and
rabbis. You could seek it yourself. By
day, Spinosa had a trade. He could grind
some of the most precise lenses in all
of Europe. Praised for their minimal
spherical and chromatic aberration. But
by night, he worked on the blueprints of
secular philosophy, a philosophy of
nature that would later influence the
theological beliefs of one Albert
Einstein three centuries later. But
money talked. And in the Dutch Republic,
owning a telescope wasn't just about
science. It was about status, prestige,
a conversation piece with cosmic
implications. Because to look through
one was to risk something your church or
synagogue or your worldview might not
tolerate and you might not survive.
People asked as they peered through the
lenses, "What else is out there? What
are we a part of? What are we made of?
And who, if anyone, is rightfully at the
center?" In that moment, the lens wasn't
just a tool. It was a dare. Antoine van
Leonog wasn't a scientist. He was a
draper, a fabric maker. But in the back
of the shop, under a flickering flame,
he spent hours grinding tiny lenses,
each no bigger than a pee, a lentil, for
which the lens is named. They were for
seeing smaller things, not distant
things. He built simple single lens
microscopes that could magnify up to 275
times, far sharper than any compound
microscope of that era. And in it, it
could zoom into droplets of water, see
into sperm cells and bacteria and
capillaries and human veins under glass.
He pointed them into rainwater, into
blood, into saliva. And what he found
rewrote the rules of reality itself.
Microscopic life was teeming in every
drop. Cells wriggled with a purpose like
tiny arrows. But they had no brains, no
soul, no spirit. Capillaries pulsed with
blood. Life force multiplying, moving,
an angelic fresco dissolving under the
lens. Until then, the unseen was sacred,
attributed to angels, to demons, to
divine mystery. If it was invisible, it
was
unknowable. You were forbidden to ask
about. But Luen Hook shattered those
ideas. He showed the unseen wasn't
mystical. It was microbial. It had form.
It had movement. It had purpose
seemingly. One thing was for sure, it
was real. And if an entire universe
could live inside a single droplet of
water, what did that say about our
macrocosm? Luen Hook's handwritten
observations and sketches of animules
besides stained glass manuscripts
brought reality into a new focus, the
microscopic world. But there was a
bigger revolution about to come,
displacing humanity away from the center
like a giant lever. We weren't divine
observers. We were part of the system
itself. Organisms made of cells
surrounded by others, not alone and not
central and not eternal. And then with
Galileo's telescope, all hell broke
loose. Galileo's telescope was the lever
that displaced the Earth from the center
of the universe. And while Luin Hook was
uncovering the invisible life at the
microcosmic level, Galileo turned his
lenses skyward, cracking open the
macrocosmos. A year after Hans
Liippershape filed the telescope patent
in6008, the idea had reached Italy, and
Galileo talked about a certain Dutchman
who had come up with the idea. He never
even saw Hans's design, but he didn't
need to. He was so brilliant he could
build his own sharper, stronger, more
powerful, more stable on a telescope
mount that he invented. And he pointed
it towards the stars above. And that's
when everything shattered forever. The
moon, it wasn't a smooth crystallin ball
made of ethereal materials. Unlike the
Earth, it was cratered, mountainous, and
torn just like the Earth. Jupiter was
not alone. It had four moons clearly
revolving around it, not the Earth. and
Venus. It had phases just like our moon.
It meant it orbited the sun, not the
Earth, against what the Catholic Church
had taught. This was all hiding in plain
sight. But it took the lens optimized,
refined, and developed for decades in
conversations all across Europe to
shatter the TMIC system that had ruled
for centuries, for millennia. Earth at
the center, heaven above, God above it
all. But now the telescope said
otherwise. We weren't central. We
weren't even close. The church tolerated
math. It tolerated ideas to some extent.
It even tolerated looking at the heavens
and telling horoscopes. But the
telescope, it was technology that
refracted the church's reality. In 1616,
the church officially banned
helioentrism. And Galileo, the maestro,
was warned, "Do not teach this principle
ever again. You may research it. You may
write about it in Latin, but do not
teach it to the natives in Italian that
they could understand themselves. But
Galileo didn't stop. In 1632, he
published a dialogue concerning the two
chief world systems, TMIC and Capernac.
It was a bold defense of Capernicus'
helioentrism, and it was a direct shot
at the church's authority. The backlash
was expected and immediate. In 1633, he
was tried for heresy and found
vehemently suspect of it. He was forced
to recant at knife point and sentenced
to lifelong house arrest. But Galileo
kept watching. He kept writing. He kept
looking and he kept making new
discoveries like the discourse which
described laws that we now ascribe to
the first application and writing of the
scientific method. this was too
dangerous to publish in Galileo's native
Italy or any Catholic country. So he
snuck it to the Netherlands where it was
published by Elsir, a journal house that
still exists to this very day. It was
published in 1644. The confluence of
technology, craftsmanship, and
capitalism led to the ultimate
understanding of what we're still
searching and looking forward to this
very day. How did it all begin? What is
it all made of? and how potentially may
it all end. Four centuries later, we're
still looking for these answers. Today,
the lenses are sharper, the questions
deeper, and slightly less dangerous,
except for maybe your tender prospects.
At 5200 meters above sea level in
Chile's Atakama Desert, the Simons
Observatory scans the oldest light in
the universe, the cosmic microwave
background radiation, searching for
telltale signs, not of planets, not of
stars or cells, but of signals from the
inflationary origin of the universe just
a trillionth of a trillionth of a
trillionth of a second after the Big
Bang. It's not about proving scripture
wrong. It's about finding what came
before scripture even existed. This is
the scientific tradition carried
forward. The same mission but with
million-dollar precision. The
microscope, the telescope, commerce, the
printing press, the enlightenment. Not
to disprove God or belief itself, but to
look past it, past genesis, past the
spiritual, into the scientific
beginnings, expansion, collision,
entropy, the nature of consciousness and
time itself. And still, just like the
1400s, we use magnificent lenses to see
more clearly.