Isaac Newton today is venerated as one of the greatest scientists who ever lived -- the father of classical mechanics and co-creator of calculus. But in his day, Newton was known for many things, including some very bizarre behavior and a personality that might be considered quirky at best.

Consider these 10 fascinating facts about Newton:...

Fact #10: He died a virgin. Newton never married and, though it's impossible to verify, is widely believed never to have had sex.