At about a year and a half, the child discovers another fact, and that is that each thing has its own name.
Mathematics is like childhood diseases. The younger you get it, the better.
Thermodynamics is a funny subject. The first time you go through it, you don't understand it at all. The second time you go through it, you think you understand it, except for one or two small points. The third time you go through it, you know you don't understand it, but by that time you are so used to it, it doesn't bother you any more.
If you want to be a physicist, you must do three things-first, study mathematics, second, study more mathematics, and third, do the same.
We can kill lots of people. We do kill lots of people. We can destroy virtually anything we choose to destroy.
I like conventions. I like meeting and greeting. I'm perched on that edge where I'm getting more attention than I quite know what to do with, though.
Never assume greatness is for someone else. Imagine every day that you too can do great things. Have the courage to take the challenge, make the mistakes, and move forward.
One must be thrust out of a finished cycle in life, and that leap is the most difficult to make - to part with one's faith, one's love, when one would prefer to renew the faith and recreate the passion.