Hazrat Mahal, Begum Of Oudh,

The Weapon Of Criticism Can Never Replace The Criticism Of Weapons.

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)

Music Is The Mirror Of Reality.

The Worker Puts His Life Into The Object; But Now It No Longer Belongs To Him, It Belongs To The Object.

All Science Would Be Superfluous If The Outward Appearance And The Essence Of Things Directly Coincided.