At the age of 21, Stephen Hawking was diagnosed with a rare, slow-progressing form of amyotrophic lateral sclerosis (ALS), better known as Lou Gehrig’s disease. At the time, doctors gave him two years to live. Today, aged 74 and still kicking, Hawking is considered to be one of the most brilliant theoretical physicists on Earth.
Both his astounding work and his very existence prove that even when facing dire odds, humans can achieve great things. Expand your mind, feed your soul, and get inspired to achieve great things of your own with these amazing Stephen Hawking quotes:
For more on Stephen Hawking, see what he was like in his . Next, discover some more choice words from a titan of science with this gallery of the best Neil DeGrasse Tyson tweets.