The Full Man Does Not Understand The

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)

Philosophy Is To Science As Masturbation Is To Sex.

If Anything Is Certain, It Is That I Myself Am Not A Marxist.

The Ruling Ideas Of Each Age Have Ever Been The Ideas Of Its Ruling Class.

Every Emancipation Is A Restoration Of The Human World And Of Human Relationships To A Man Himself.