In fact the total amount that a physicist knows is very little. He has only to remember the rules to get him from one place to another and he is all right.

It is in the admission of ignorance and the admission of uncertainty that there is a hope for the continuous motion of human beings in some direction that doesn't get confined, permanently blocked, as it has so many times before in various periods in the history of man.

Victory usually goes to those green enough to underestimate the monumental hurdles they are facing.

But there is nothing in biology yet found that indicates the inevitability of death.

I learned from her that every woman is worried about her looks, no matter how beautiful she is.

Work hard to find something that fascinates you.

The electron is a theory we use; it is so useful in understanding the way nature works that we can almost call it real.