Solitude gives birth to the original in us, to beauty unfamiliar and perilous - to poetry. But also, it gives birth to the opposite: to the perverse, the illicit, the absurd.

Even in a personal sense, after all, art is an intensified life. By art one is more deeply satisfied and more rapidly used up. It engraves on the countenance of its servant the traces of imaginary and intellectual adventures, and even if he has outwardly existed in cloistral tranquility, it leads in the long term to overfastidiousness, over-refinement, nervous fatigue and overstimulation, such as can seldom result from a life of the most extravagant passions and pleasures.

The observations and encounters of a solitary, taciturn man are vaguer and at the same times more intense than those of a sociable man; his thoughts are deeper, odder and never without a touch of sadness. Images and perceptions that could be dismissed with a glance, a laugh, an exchange of opinions, occupy him unduly, become more intense in the silence, become significant, become an experience, an adventure, an emotion. Solitude produces originality, bold and astonishing beauty, poetry. But solitude also produces perverseness, the disproportionate, the absurd and the forbidden.

One has the idea of a stupid man as perfectly healthy and ordinary, and of illness as making one refined and clever and unusual.

This was love at first sight, love everlasting: a feeling unknown, unhoped for, unexpected--in so far as it could be a matter of conscious awareness; it took entire possession of him, and he understood, with joyous amazement, that this was for life.

I tell them that if they will occupy themselves with the study of mathematics they will find in it the best remedy against the lusts of the flesh.

Order and simplification are the first steps toward the mastery of a subject.