Nature, to be commanded, must be obeyed. The imagination must be given not wings but weights.

I am an anarchist in politics and an impressionist in art as well as a symbolist in literature. Not that I understand what these terms mean, but I take them to be all merely synonyms of pessimist.

I firmly believe, that before many centuries more, science will be the master of man. The engines he will have invented will be beyond his strength to control. Someday, science shall have the existence of mankind in its power, and the human race commit suicide by blowing up the world.

The first serious consciousness of Nature's gesture - her attitude towards life-took form then as a phantasm, a nightmare, all insanity of force. For the first time, the stage-scenery of the senses collapsed; the human mind felt itself stripped naked, vibrating in a void of shapeless energies, with resistless mass, colliding, crushing, wasting, and destroying what these same energies had created and labored from eternity to perfect.

Teachers affect eternity. There is no telling where their influence stops.

At the utmost, the active-minded young man should ask of his teacher only mastery of his tools. The young man himself, the subject of education, is a certain form of energy; the object to be gained is economy of his force; the training is partly the clearing away of obstacles, partly the direct application of effort. Once acquired, the tools and models may be thrown away.

If one shed tears, they must be shed on one's pillow.