The capitalist knows that all commodities, however scurvy they may look, or however badly they may smell, are in faith and in truth money, inwardly circumcised Jews, and what is more, a wonderful means whereby out of money to make more money.

If money is the bond binding me to human life, binding society to me, binding me and nature and man, is not money the bond of all bonds? Can it not dissolve and bind all ties? Is it not, therefore, the universal agent of separation?

The country that is more developed industrially only shows, to the less developed, the image of its own future.

There is no royal road to science, and only those who do not dread the fatiguing climb of its steep paths have a chance of gaining its luminous summits. (Preface to the French edition).

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

I am nothing and should be everything.

Men's ideas are the most direct emanations of their material state.