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

From the outset, the Christian was the theorizing Jew, the Jew is therefore the practical Christian, and the practical Christian has become a Jew again.

It is not the consciousness of men that determines their being, but, on the contrary, their social being that determines their consciousness.

History does nothing; it does not possess immense riches, it does not fight battles. It is men, real, living, who do all this.

Under private property, each tries to establish over the other an alien power, so as thereby to find satisfaction of his own selfish need. The increase in the quantity of objects is therefore accompanied by an extension of the realm of the alien powers to which man is subjected, and every new product represents a new potentiality of mutual swindling and mutual plundering.

The product of mental labor - science - always stands far below its value, because the labor-time necessary to reproduce it has no relation at all to the labor-time required for its original production.

Catch a man a fish, and you can sell it to him. Teach a man to fish, and you ruin a wonderful business opportunity.