The ruling ideas of each age have ever been the ideas of its ruling class.
The country that is more developed industrially only shows, to the less developed, the image of its own future.
The traditions of the dead generations weigh like a nightmare upon the living.
Bourgeois society ought long ago to have gone to the dogs through sheer idleness; for those of its members who work, acquire nothing, and those who acquire anything, do not work.
All history is nothing but a continuous transformation of human nature.
Nothing is easier than to give Christian asceticism a Socialist tinge.