Let the ruling classes tremble at a communist revolution. The proletarians have nothing to lose but their chains. They have a world to win. Workingmen of all countries, unite!

Even an entire society, a nation, or all simultaneously existing societies taken together, are not owners of the earth. They are simply its possessors, its beneficiaries, and have to bequeath it in an improved state to succeeding generations.

The more the division of labor and the application of machinery extend, the more does competition extend among the workers, the more do their wages shrink together.

Nothing can have value without being an object of utility.

If one wants to be an ox one can easily turn one's back on hum suffering and look after one's own skin.

The task is not just to understand the world but to change it.

Man makes religion, religion does not make man