Nature does not care what we call it, she just keeps on doing it.

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

We are very lucky to be living in an age in which we are still making discoveries. It is like the discovery of America-you only discover it once. The age in which we live is the age in which we are discovering the fundamental laws of nature, and that day will never come again. It is very exciting, it is marvelous, but this excitement will have to go.

I have a limited intelligence and I've used it in a particular direction.

I learned very early the difference between knowing the name of something and knowing something.

The unanswerable mysteries... the attitude that all is uncertain... to summarize it - the humility of the intellect.

Science is a way to teach how something gets to be known, what is not known, to what extent things are known (for nothing is known absolutely), how to handle doubt and uncertainty, what the rules of evidence are, how to think about things so that judgments can be made, how to distinguish truth from fraud, and from show.