Religion is only the illusory sun which revolves round man as long as he does not revolve round himself.
The ideas of the ruling class are in every epoch the ruling ideas, i.e., the class which is the ruling material force of society, is at the same time its ruling intellectual force.
The Jews of Poland are the smeariest of all races.
Darwin has interested us in the history of nature's technology.
Philosophy studies the world, but the point is to change it.
Science and democracy are the right and left hands of what I'll refer to as the move from the realm of necessity to the realm of freedom.