Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.

If one man offers you democracy and another offers you a bag of grain, at what stage of starvation do you prefer the grain to the vote?

Men who allow their love of power to give them a distorted view of the world are to be found in every asylum: one man will think he is the Governor of the Bank of England, another will think he is the King, and yet another will think he is God. Highly similar delusions, if expressed by educated men in obscure language, lead to professorships of philosophy; and if expressed by emotional men in eloquent language, lead to dictatorships.

In view of the fact that in any future world war nuclear weapons will certainly be employed, and that such weapons threaten the continued existence of mankind, we urge the governments of the world to realize, and to acknowledge publicly, that their purpose cannot be furthered by a world war, and we urge them, consequently, to find peaceful means for the settlement of all matters of dispute between them.

Frege has the merit of ... finding a third assertion by recognising the world of logic which is neither mental nor physical.

There are three ways of securing a society that shall be stable as regards population. The first is that of birth control, the second that of infanticide or really destructive wars, and the third that of general misery except for a powerful minority.

One should as a rule respect public opinion in so far as is necessary to avoid starvation and to keep out of prison, but anything that goes beyond this is voluntary submission to an unnecessary tyranny.