Nature...cannot be fooled!

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.

The basis of action on love, the brotherhood of all men, the value of the individual... the humility of the spirit.

I think it's much more interesting to live not knowing than to have answers which might be wrong.

The first principle is that you must not fool yourself and you are the easiest person to fool.

Science is a way for us to not fool ourselves.

It's amazing how many people even today use a computer to do something you can do with a pencil and paper in less time.