Much unhappiness has come from things left unsaid

An agile but unintelligent and abnormal German, possessed of the mania of grandeur.

The example of a syllogism that he had studied in Kiesewetter's logic: Caius is a man, men are mortal, therefore Caius is mortal, had throughout his whole life seemed to him right only in relation to Caius, but not to him at all.

Slavery results from laws, laws are made by governments, and, therefore people can only be freed from slavery by the abolition of governments.... And it is time for people to understand that governments not only are not necessary, but are harmful and most highly immoral institutions, in which a self-respecting, honest man cannot and must not take part.

Art is not, as the metaphysicians say, the manifestation of some mysterious idea of beauty or God; it is not, as the aesthetical physiologists say, a game in which man lets off his excess of stored-up energy; it is not the expression of man's emotions by external signs; it is not the production of pleasing objects; and, above all, it is not pleasure; but it is a means of union among men, joining them together in the same feelings, and indispensable for the life and progress toward well-being of individuals and of humanity.

Woman is more impressionable than man. Therefore in the Golden Age they were better than men. Now they are worse.

The possibility of killing one's self is a safety valve. Having it, man has no right to say life is unbearable.