The word of man is the most durable of all material.

There is a wide difference between the original thinker and the merely learned man.

The beard, being a half-mask, should be forbidden by the police - It is, moreover, as a sexual symbol in the middle of the face, obscene: that is why it pleases women.

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.

One can never read too little of bad, or too much of good books: bad books are intellectual poison; they destroy the mind. In order to read what is good one must make it a condition never to read what is bad; for life is short, and both time and strength limited.

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.

This actual world of what is knowable, in which we are and which is in us, remains both the material and the limit of our consideration.