The dictum that human nature cannot be changed is one of those tiresome platitudes that conceal from the ignorant the depths of their own ignorance.

I feel as if one would only discover on one's death bed what one ought to have lived for

A democrat need not believe that the majority will always reach a wise decision. He should however believe in the necessity of accepting the decision of the majority, be it wise or unwise, until such a time that the majority reaches another decision.

When all experts agree, you need to watch out.

I often long to . . . give up my life to love of my neighbour. This is really a temptation.

I remain convinced that obstinate addiction to ordinary language in our private thoughts is one of the main obstacles to progress in philosophy.

One of the chief triumphs of modern mathematics consists in having discovered what mathematics really is.