Religion Is The Opium Of The People

Democracy Is The Road To Socialism.

Luxury Is The Opposite Of The Naturally Necessary.

The Unity Of The Bourgeoisie Can Be Shaken Only By The Unity Of The Proletariat.

Once The Inner Connection Is Grasped, All Theoretical Belief In The Permanent Necessity Of Existing Conditions Collapses Before Their Collapse In Practice -- Letter To Ludwig Kugelmann (july 11, 1868)

As Individuals Express Their Life, So They Are. What They Are, Therefore, Coincides With Their Production, Both With What They Produce And With How They Produce. The Nature Of Individuals Thus Depends On The Material Conditions Determining Their Production.