For every fact there is an infinity of hypotheses.

The real purpose of the scientific method is to make sure nature hasn’t misled you into thinking you know something you actually don’t know.

The TV scientist who mutters sadly, "The experiment is a failure; we have failed to achieve what we had hoped for," is suffering mainly from a bad script writer. An experiment is never a failure solely because it fails to achieve predicted results. An experiment is a failure only when it also fails adequately to test the hypothesis in question, when the data it produces don't prove anything one way or another.

To solve a problem it is necessary to think. It is necessary to think even to decide what facts to collect.

One geometry cannot be more true than another; it can only be more convenient. Geometry is not true, it is advantageous.

Boredom always precedes a period of great creativity.