It is absolutely impossible to transcend the laws of nature. What can change in historically different circumstances is only the form in which these laws expose themselves.

Capital is reckless of the health or length of life of the laborer, unless under compulsion from society.

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

The imaginary flowers of religion adorn man's chains. Man must throw off the flowers, and also the chains.

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

May the devil take these peoples movements, especially when they are 'peaceful'.

Both for the production on a mass scale of this communist consciousness, and for the success of the cause itself, the alteration of men on a mass scale is necessary, an alteration which can only take place in a practical movement, a revolution; this revolution is necessary, therefore, not only because the ruling class cannot be overthrown in any other way, but also because the class overthrowing it can only in a revolution succeed in ridding itself of all the muck of ages and become fitted to found society anew.