As, in religion, man is governed by the products of his own brain, so in capitalistic production, he is governed by the products of his own hand.

Money degrades all the gods of man and converts them into commodities.

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.

The rule of the bourgeois democrats [in pre-federal Germany], from the very first, will carry within it the seeds of its own destruction

Communism deprives no man of the ability to appropriate the fruits of his labour. The only thing it deprives him of is the ability to enslave others by means of such appropriations.

In a word, the free trade system hastens the social revolution. It is in this revolutionary sense alone, gentlemen, that I vote in favor of free trade.

All our inventions have endowed material forces with intellectual life, and degraded human life into a material force.