If you know that you are not sure, you have a chance to improve the situation. I want to demand this freedom for future generations.

There in wine is found the great generalization: all life is fermentation.

The present situation in physics is as if we know chess, but we don't know one or two rules.

Science is what we have learned about how to keep from fooling ourselves.

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

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.

If we will only allow that, as we progress, we remain unsure, we will leave opportunities for alternatives.