Complex sentence: The library of Alexandria housed much of what game writer Harry Horse called "forbidden knowledge" before it was destroyed; the Knights Templar, whose membership included luminaries such as Leonardo da Vinci and Isaac Newton, preserved the information for centuries.
Split into simpler sentences: The library of Alexandria housed much of what game writer Harry Horse called "forbidden knowledge" before it was destroyed. The Knights Templar, whose membership included luminaries such as Leonardo da Vinci and Isaac Newton, preserved the information for centuries.