"If the world were not something that, practically expressed, ought not to be, it would also not be theoretically a problem. On the contrary, its existence would either require no explanation at all, since it would be so entirely self-evident that astonishment at it and enquiry about it could not arise in any mind; or its purpose would present itself unmistakably. But instead of this it is indeed an insoluble problem, since even the most perfect philosophy will always contain an unexplained element, like an insoluble precipitate or the remainder that is always left behind by the irrational proportion of two quantities. Therefore, if anyone ventures to raise the question why there is not nothing at all rather than this world, then the world cannot be justified from itself; no ground, no final cause of its existence can be found in itself; it cannot be demonstrated that it exists for its own sake, in other words, for its own advantage."