“I wish to confound all these people, to create a work of art of a supernatural realism and of a spiritualist naturalism. I wish to prove... that nothing is explained in the mysteries which surround us.”

“Far from seeking to justify, as does the Church, the necessity of torments and afflictions, he cried, in his outraged pity: 'If a God has made this world, I should not wish to be that God. The world's wretchedness would rend my heart.”

“What he wanted was colours which would appear stronger and clearer in artificial light. He did not particularly care if they looked crude or insipid in daylight, for he lived most of his life at night, holding that night afforded greater intimacy and isolation and that the mind was truly roused and stimulated only by awareness of the dark; moreover he derived a peculiar pleasure from being in a well-lighted room when all the surrounding houses were wrapped in sleep and darkness, a sort of enjoyment in which vanity may have played some small part, a very special feeling of satisfaction familiar to those who sometimes work late at night and draw aside the curtains to find that all around them the world is dark, silent and dead.”

“...indeed it is very true that, just as the finest air in the world is vulgarized beyond all bearing once the public has taken to hum it and the street organs to play it, so the work of art that has appealed to the sham connoisseurs, that is admired by the uncritical, that is not content to rouse the enthusiasm of only a chosen few, becomes for this very reason, in the eyes of the elect, a thing polluted, commonplace, almost repulsive.”

“There is not one single invention of (Nature's), however subtle or impressive it may be thought to be, that the human spirit cannot create; no forest of Fontainebleu or moonlit scene that cannot be produced with a floodlit stage set; no waterfall that hydraulics cannot imitate so perfectly as to be indistinguishable from the original; no rock that papier-mâché cannot copy; no flower that specious taffetas and delicately painted papers cannot rival! There is no doubt whatever that this eternally self-replicating old fool has now exhausted the good-natured admiration of all true artists, and the moment has come to replace her, as far as that can be achieved, with artiface.”

“There are two ways of ridding ourselves of a thing which burdens us, casting it away or letting it fall. To cast away requires an effort of which we may not be capable, to let fall imposes no labour, is simpler, without peril, within reach of all. To cast away, again, implies a certain interest, a certain animation, even a certain fear; to let fall is absolute indifference, absolute contempt; believe me, use this method, and Satan will flee.”

“The belief that man is an irresolute creature pulled this way and that by two forces of equal strength, alternately winning and losing the battle for his soul; the conviction that human life is nothing more than an uncertain struggle between heaven and hell; the faith in two opposed entities, Satan and Christ - all this was bound to engender those internal discords in which the soul, excited by the incessant fighting, stimulated as it were by the constant promises and threats, ends up by giving in and prostitutes itself to whichever of the two combatants has been more obstinate in its pursuit.”