Many a prophecy, by the mere force of its being believed, is transmuted to fact.

To introduce something altogether new would mean to begin all over, to become ignorant again, and to run the old, old risk of failing to learn.

The temptation was great to muster what force we could and put up a fight. It's the easiest way out, and the most satisfactory to self-respect--but, nearly invariably, the stupidest.

Politically popular speech has always been protected: even the Jews were free to say ‘Heil Hitler.’

There seems to be a feeling that anything that is natural is good. Strychnine is natural.

The essential building block is...the true love that is impossible to define for those who have never experienced it and unnecessary to define for those who have.

Humanity has the stars in its future, and that future is too important to be lost under the burden of juvenile folly and ignorant superstition.