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.

We have no compassion and we ask no compassion from you. When our turn comes, we shall not make excuses for the terror.

Religion is only the illusory sun which revolves round man as long as he does not revolve round himself.

Nothing can have value without being an object of utility.

Darwin's book is very important and serves me as a basis in natural science for the class struggle in history. One has to put up with the crude English method of development, of course. Despite all deficiencies not only is the death-blow dealt here for the first time to 'teleology' in the natural sciences, but their rational meaning is empirically explained.

One of the most difficult tasks confronting philosophers is to descend from the world of thought to the actual world.

English law in 1572 decreed that beggars above 14 years of age are to be severely flogged and branded on the left ear unless some one will take them into service for two years; in case of a repetition of the offense, if they are over 18, they are to be executed, unless some one will take them into service for two years; but for the third offence they are to be executed without mercy as felons.