I am greatly pleased with the public, authentic isolation in which we two, you and I, now find ourselves. It is wholly in accord with our attitude and our principles.

The English have all the material requisites for the revolution. What they lack is the spirit of generalization and revolutionary ardour.

Only in community with others has each individual the means of cultivating his gifts in all directions; only in the community, therefore, is personal freedom possible.

History does nothing, possesses no enormous wealth, fights no battles. It is rather man, the real, living man, who does everything, possesses, fights. It is not History, as if she were a person apart, who uses men as a means to work out her purposes, but history itself is nothing but the activity of men pursuing their purposes.

In the eyes of dialectical philosophy, nothing is established for all times, nothing is absolute or sacred.

Greek philosophy seems to have met with something with which a good tragedy is not supposed to meet, namely, a dull ending.

Parliamentary cretinism: that peculiar malady which since 1848 has raged all over the Continent, which holds those infected by it fast in an imaginary world and robs them of all sense, all memory, all understanding of the rude external world.