The universe is a book written in the language of mathematics, and physics is the key to deciphering its pages.
The boldness of his mind was matched by the candor of his speech.
So that morning in 1962 I told myself: Let everyone else call your idea crazy . . . just keep going. Don’t stop. Don’t even think about stopping until you get there, and don’t give much thought to where “there” is. Whatever comes, just don’t stop.