Intellect is a magnitude of intensity, not a magnitude of extensity.

Gaiety alone, as it were, is the hard cash of happiness; everything else is just a promissory note.

A man who has no mental needs, because his intellect is of the narrow and normal amount, is, in the strict sense of the word, what is called a philistine.

Rascals are always sociable, more's the pity! and the chief sign that a man has any nobility in his character is the little pleasure he takes in others' company.

To desire immortality for the individual is really the same as wanting to perpetuate an error forever.

Astrology furnishes a splendid proof of the contemptible subjectivity of men in consequence whereof they refer everything to themselves and from every idea at once go straight back to themselves. Astrology refers the course of celestial bodies to the miserable ego; it also establishes a connection between the comets in heaven and the squabbles and rascalities on earth.

The cause of laughter is simply the sudden perception of the incongruity between a concept and the real project.