The wonder of nature does not become smaller because one cannot measure it by the standards of human moral and human aims.

There could be no greater calamity than a permanent discord between us and the Arab people. Despite the great wrong that has been done us, we must strive for a just and lasting compromise with the Arab people Let us recall that in former times no people lived in greater friendship with us than the ancestors of these Arabs.

Most people see what is, and never see what can be.

It is a magnificent feeling to recognize the unity of complex phenomena which appear to be things quite apart from the direct visible truth.

We must be prepared to make the same heroic sacrifices for the cause of peace that we make ungrudgingly for the cause of war.

It would of course be a great step forward if we succeeded in combining the gravitational field and the electromagnetic field into a single structure. Only so could the era in theoretical physics inaugurated by Faraday and James Clerk Maxwell be brought to a satisfactory close.

One cannot learn so well as by experiencing it oneself.