A reader is doubly guilty of bad manners against an author when he praises his second book at the expense of his first (or vice versa) and then expects the author to be grateful for what he has done.
It was Christianity, with its heartfelt resentment against life, that first made something unclean of sexuality: it threw filth on the origin, on the essential fact of our life.
The finest and healthiest thing about science is, as in the mountains, the brisk air blowing around in it.--The spiritually delicate (such as artists) shun and slander science owing to this air.