The value of a college education is not the learning of many facts but the training of the mind to think

Whatever your problems in math are, I assure mine are greater.

The real problem is in the hearts and minds of men. It is not a problem of physics but of ethics. It is easier to denature plutonium than to denature the evil spirit of man.

My success wasn't so much due to intelligence, but the fact that I stuck with problems longer.

I am a stronger follower of Veganism by principle, not just because of moral and aesthetic reasons. I truly believe in a Vegetarian lifestyle and I have faith and hopes in change in human destiny, thanks to the physical effects and benefits of a healthier diet and its influence on the character of the people. It will bring about some benefit and improvement to human society.

If you cannot explain it simply, you do not understand it enough.

Do you really believe that the moon isn’t there when nobody looks?