Writers may be classified as meteors, planets, and fixed stars. They belong not to one system, one nation only, but to the universe. And just because… - Arthur Schopenhauer

If children were brought into the world by an act of pure reason alone, would the human race continue to exist? Would not a man rather have so much sympathy with the coming generation as to spare it the burden of existence, or at any rate not take it upon himself to impose that burden upon it in cold blood?

Authors can be divided into meteors, planets and fixed stars. The meteors produce a loud momentary effect; we look up, shout 'see there!' and then they are gone for ever. The planets and comets last for a much longer time....The fixed stars alone are constant and unalterable; their position in the firmament is fixed; they have their own light and are at all times active, because they do not alter their appearance through a change in our standpoint, for they have no parallax. Unlike the others, they do not belong to one system (nation) alone, but to the world. But just because they are situated so high, their light usually requires many years before it becomes visible to the inhabitatns of earth.

"The fourfold root of the principle of sufficent reason is "Anything perceived has a cause. All conclusions have premises. All effects have causes. All actions have motives.