Advances in science help to delegitimize the rule of kings and the power of the Church.

The proletarians have nothing to loose but their chains. They have a world to win.

Be careful to trust a person who does not like wine.

Since only what is material is perceptible, knowable, nothing is known of the existence of God.

In every stockjobbing swindle every one knows that some time or other the crash must come, but every one hopes that it may fall on the head of his neighbor, after he himself has caught the shower of gold and placed it in safety.

History calls those men the greatest who have ennobled themselves by working for the common good; experience acclaims as happiest the man who has made the greatest number of people happy.

The bourgeoisie cannot exist without constantly revolutionizing the instruments of production, and thereby the relations of production, and with them the whole relations of society.