The only time a man thinks is when he's alone.

When you are listening to music it is better to cover your eyes than your ears.

A belief which leaves no place for doubt is not a belief; it is a superstition.

A reformer knows neither how to do nor to undo.

An ignorance of Marx is as frequent among Marxists as an ignorance of Christ is among Catholics.

Theology is the logic of the Devil.

The only time a man thinks is when he's alone.