I do not much believe in education. Each person ought to be his or her own model, however frightful that may be.

Do you remember how electrical currents and 'unseen waves' were laughed at? The knowledge about man is still in its infancy.

I know that it is a hopeless undertaking to debate about fundamental value judgements. For instance, if someone approves, as a goal, the extirpation of the human race from the earth, one cannot refute such a viewpoint on rational grounds. But if there is agreement on certain goals and values, one can argue rationally about the means by which these objectives may be obtained.

Most of the fundamental ideas of science are essentially simple, and may, as a rule, be expressed in a language comprehensible to everyone.

A conflict arises when a religious community insists on the absolute truthfulness of all statements recorded in the Bible. This means an intervention on the part of religion into the sphere of science; this is where the struggle of the Church against doctrines of Galileo and Darwin belongs.

The greatest activity of which man is capable: Opening up yet another fragment of the frontier of beauty.

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