The form of government that is most suitable to the artist is no government at all. ... One might point out how the Renaissance was great, because it sought to solve no social problem, and busied itself not about such things, but suffered the individual to develop freely, beautifully, and naturally, and so had great and individual artists, and great, individual men. One might point out how Louis XIV, by creating the modern state, destroyed the individualism of the artist.
When under the influence of certain (or some) reasons (or causes) (alcohol, war, etc - added Spir here) the low instincts are unbridled (or unrestrained), the brute appears (or come forward, "apparait", Fr.) and rule over (or dominate), stifling every ("toute", Fr.) noble, generous impulse; it is then the ruin (or downfall or decline) of any humanity in man.
Some men spend a lifetime in an attempt to comprehend the complexities of women. Others pre-occupy themselves with somewhat simpler tasks, such as understanding the theory of relativity!
Every man takes care that his neighbor shall not cheat him. But a day comes when he begins to care that he does not cheat his neighbor. Then all goes well. He has changed his market cart into a chariot of the sun.
Man is a flux of states of consciousness, a flow of passing thoughts, each thought of self another self, a myriad thoughts, a myriad selves, a continual becoming but never being, a will-of-the-wisp flitting of ghosts in ghostland.
But the effort, the effort! And as the marrow is eaten out of a man's bones and the soul out of his belly, contending with the strange rapacity of savage life, the lower stage of creation, he cannot make the effort any more.