There are moments of existence when time and space are more profound, and the awareness of existence is immensely heightened.

I throw fresh seeds out. Who knows what survives?

In philosophical inquiry, the human spirit, imitating the movement of the stars, must follow a curve which brings it back to its point of departure. To conclude is to close a circle.

Good sense tells us that earthly things are rare and fleeting, and that true reality exists only in dreams. To draw sustenance from happiness- natural or artificial - you must first have the courage to swallow it; and those who perhaps most merit happiness are precisely those on whom felicity, as mortals conceive it, always acts as a vomitive.

Hashish will be, indeed, for the impressions and familiar thoughts of the man, a mirror which magnifies, yet no more than a mirror.

I have cultivated my hysteria with delight and terror. Now I suffer continually from vertigo, and today, 23rd of January, 1862, I have received a singular warning, I have felt the wind of the wing of madness pass over me.

Genius is childhood recalled at will.