The chief enemy of peace is the spirit of unreason itself: an inability to conceive alternatives, an unwillingness to reconsider old prejudices, to part with ideological obsessions, to entertain new ideas or to improve new plans.

The very people who shudder over the cruelty of the hunter are apt to forget that slaughter, in the grimmest sense of the word, is a process they entrust daily to the butcher; and that unlike the game of the forests, even the dumbest creatures of the slaughterhouse know what is in store for them.

The final goal of human effort is man's self-transforma tion.

The right to have access to every building in the city by private motorcar in an age when everyone possesses such a vehicle is actually the right to destroy the city.

Life is the only art that we are required to practice without preparation, and without being allowed the preliminary trials, the failures and botches, that are essential for the training...

Safety razors make it hard to grow beards in America: America would be a better place if there were a few bearded, savage, terrible old men.

Every transformation of humanity has rested upon deep stirrings and intuitions, whose rationalized expression takes the form of a new picture of the cosmos and the nature of the human.