Before Silicon Valley, there was Alexandria. In the 3rd century...
Genius Thinking@GeniusGTX
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Feb 14, 2025
~2 min read
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Before Silicon Valley, there was Alexandria.
In the 3rd century BCE, it was the global hub of knowledge, home to the brightest geniuses in human history.
At its center? A library containing over 1,000 years of wisdom.
But one fatal decision changed everything... 🧵
In the 3rd century BCE, it was the global hub of knowledge, home to the brightest geniuses in human history.
At its center? A library containing over 1,000 years of wisdom.
But one fatal decision changed everything... 🧵
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Around 300 BCE, Egypt’s Pharaoh Ptolemy II launched one of the most ambitious projects of the ancient world:
A library that aimed to collect a copy of every book ever written...
A library that aimed to collect a copy of every book ever written...
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It wasn’t just a library—it was a vision of universal knowledge.
The Library of Alexandria was part of the Mouseion, a research institute that included lecture halls, laboratories, and even botanical gardens.
The Library of Alexandria was part of the Mouseion, a research institute that included lecture halls, laboratories, and even botanical gardens.
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The ancient world’s first university was where the brightest minds gathered to study and innovate.
By the 2nd century BCE, the Library housed 400,000 to 700,000 scrolls on topics ranging from astronomy to medicine.
By the 2nd century BCE, the Library housed 400,000 to 700,000 scrolls on topics ranging from astronomy to medicine.
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Ships docking at Alexandria’s harbor were required to surrender any texts onboard for copying.
No manuscript was safe from Alexandria’s reach.
No manuscript was safe from Alexandria’s reach.
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Alexandria attracted the greatest minds of the ancient world:
• Euclid, the father of geometry, wrote his famous textbook "Elements" there.
• Eratosthenes calculated Earth’s circumference with stunning accuracy.
• Herophilos pioneered human anatomy.
• Euclid, the father of geometry, wrote his famous textbook "Elements" there.
• Eratosthenes calculated Earth’s circumference with stunning accuracy.
• Herophilos pioneered human anatomy.
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One of the Library’s greatest achievements was the Septuagint, the first Greek translation of the Hebrew Bible.
For the first time, religious texts crossed linguistic and cultural barriers.
For the first time, religious texts crossed linguistic and cultural barriers.
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But Alexandria wasn’t just about books.
Its scholars designed revolutionary inventions, including:
• Early astronomical clocks.
• Hero’s Steam Engine, 1,800 years ahead of its time.
• The hydraulic organ, a precursor to modern instruments.
Its scholars designed revolutionary inventions, including:
• Early astronomical clocks.
• Hero’s Steam Engine, 1,800 years ahead of its time.
• The hydraulic organ, a precursor to modern instruments.
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Another marvel stood at the center of Alexandria’s harbor:
The Pharos Lighthouse is one of the Seven Wonders of the Ancient World.
Standing over 100 meters tall, it symbolized Alexandria’s role as a beacon of knowledge and innovation.
The Pharos Lighthouse is one of the Seven Wonders of the Ancient World.
Standing over 100 meters tall, it symbolized Alexandria’s role as a beacon of knowledge and innovation.
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Alexandria’s greatness made it a target.
In 48 BCE, Julius Caesar’s siege of the city led to a fire in the harbor.
Some accounts suggest the flames spread to the Library, destroying part of its collection.
In 48 BCE, Julius Caesar’s siege of the city led to a fire in the harbor.
Some accounts suggest the flames spread to the Library, destroying part of its collection.
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Centuries of neglect, political instability, and religious conflict slowly eroded its collection.
By the time of the Roman Empire’s collapse, most of its scrolls were lost forever.
By the time of the Roman Empire’s collapse, most of its scrolls were lost forever.
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Some historians believe it could’ve advanced the Industrial Revolution by 1,000 years.
Imagine a world where electricity was discovered in 500 CE, not 1800 CE.
Imagine a world where electricity was discovered in 500 CE, not 1800 CE.
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Where modern medicine was practiced in ancient Rome. Losing the Library is one of history’s greatest “what ifs.”
Its dream of universal knowledge influenced the libraries of Baghdad, Constantinople, and the Islamic Golden Age.
Its dream of universal knowledge influenced the libraries of Baghdad, Constantinople, and the Islamic Golden Age.
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Thank you for reading this thread.
What’s your ONE big takeaway from the story of Alexandria?
Follow me @GeniusGTX for more stories about the hidden brilliance of ancient civilizations.
What’s your ONE big takeaway from the story of Alexandria?
Follow me @GeniusGTX for more stories about the hidden brilliance of ancient civilizations.