Karl Marx

All that is solid melts into air, all that is holy is profaned, and man is at last compelled to face with sober senses his real conditions of life, and his relations with his kind.

Workers of all lands unite. The philosophers have only interpreted the world in various ways; the point is to change it.

The philosophers have only interpreted the world; the thing, however, is to change it.

The democratic concept of man is false, because it is Christian. The democratic concept holds that . . . each man is a sovereign being. This is the illusion, dream, and postulate of Christianity.

Go on, get out - last words are for fools who haven't said enough. To his housekeeper, who urged him to tell her his last words so she could write them down for posterity.

Experience praises the most happy is the one who made the most people happy.

From each according to his abilities, to each according to his needs.