Only ideas won by walking have any value.

That God became man indicates only this: that man should not seek his salvation in eternity, but rather establish his heaven on earth.

Illusions are certainly expensive amusements; but the destruction of illusions is still more expensive, if looked upon as an amusement, as it undoubtedly is by some people.

Only the most acute and active animals are capable of boredom.

Not doubt, certainty is what drives one insane.

The future influences the present just as much as the past.

Discontent is the seed of ethics.