He possessed the logic of all good intentions and a knowledge of all the tricks of his trade, and yet he never succeeded at anything, because he believed too much in the impossible. Surprising? Why so? He was forever in the act of conceiving it!

Alas, human vices, however horrible one might imagine them to be, contain the proof (were it only in their infinite expansion) of man's longing for the infinite; but it is a longing that often takes the wrong route. It is my belief that the reason behind all culpable excesses lies in this depravation of the sense of the infinite.

Modernity is the transitory, the fugitive, the contingent, which make up one half of art, the other being the eternal and the immutable. This transitory fugitive element, which is constantly changing, must not be despised or neglected.

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 no more than childhood recaptured at will, childhood equipped now with man's physical means to express itself, and with the analytical mind that enables it to bring order into the sum of experience, involuntarily amassed.

Anybody, providing he knows how to be amusing, has the right to talk about himself.

Modernity is the transient, the fleeting, the contingent; it is one half of art, the other being the eternal and the immovable.