The highest principles for our aspirations and judgments are given to us in the Jewish-Christian religious tradition.

In the shadow of the atomic bomb it has become even more apparent that all men are, indeed, brothers.

Whatever your problems in math are, I assure mine are greater.

Thinking is to man what flying is to birds. Don’t follow the example of a chicken when you could be a lark.

A scientist is a mimosa when he himself has made a mistake, and a roaring lion when he discovers a mistake of others.

The future is an unknown, but a somewhat predictable unknown. To look to the future we must first look back upon the past. That is where the seeds of the future were planted. I never think of the future. It comes soon enough.

It is this mythical, or rather symbolic, content of the religious traditions which is likely to come into conflict with science. This occurs whenever this religious stock of ideas contains dogmatically fixed statements on subjects which belong in the domain of science.