Genius is an intellect that has become unfaithful to its destiny.

Something of great importance now past is inferior to something of little importance now present, in that the latter is a reality, and related to the former as something to nothing.

Want and boredom are indeed the twin poles of human life.

If a relationship is perfectly natural there will be a complete fusion of the happiness of both of you-owing to fellow-feeling and various other laws which govern our natures, this is, quite simply, the greatest happiness that can exist.

Our life is a loan received from death with sleep as the daily interest on this loan.

The assumption that animals are without rights, and the illusion that our treatment of them has no moral significance, is a positively outrageous example of Western crudity and barbarity. Universal compassion is the only guarantee of morality.

The man who goes up in a balloon does not feel as if he were ascending; he only sees the earth sinking deeper below him.