No opinion has ever been too errant to become a creed.

War can only be abolished by the establishment of a world government.

I did not know I loved you until I heard myself telling so, for one instance I thought, "Good God, what have I said?" and then I knew it was true.

Love as a relation between men and women was ruined by the desire to make sure of the legitimacy of children.

Most people believe in God because they have been taught from early infancy to do it, and that is the main reason. Then I think that the next most powerful reason is the wish for safety.

Politics is concerned with herds rather than with individuals, and the passions which are important in politics are, therefore, those in which the various members of a given herd can feel alike.

Mathematics, rightly viewed, possesses not only truth, but supreme beauty-a beauty cold and austere ... yet sublimely pure and capable of stern perfection such as only the greatest art can show.