Experience praises the most happy the one who made the most people happy.

Necessity is blind until it becomes conscious. Freedom is the consciousness of necessity.

Religion is the balm of the people.

Life is not determined by consciousness, but consciousness by life.

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.

Society is a sort of organism on the growth of which conscious efforts can exercise little effect.

Colonial system, public debts, heavy taxes, protection, commercial wars, etc., these offshoots of the period of manufacture swell to gigantic proportions during the period of infancy of large-scale industry. The birth of the latter is celebrated by a vast, Hero-like slaughter of the innocents.