11 Incredible Stephen Hawking Quotes

(via Mental Floss)  When Stephen Hawking was diagnosed with motor neurone disease at age 21, doctors thought he’d only survive a few more years. But the theoretical physicist defied the odds: Hawking, who passed away yesterday, lived to be 76. Here are 11 quotes from the director of research and founder of the Centre for Theoretical Cosmology at Cambridge and author of A Brief History of Time.