Intercourse is after all man's best teacher. "Know thyself" is an excellent maxim; but even self-knowledge cannot be perfected in closets and cloisters--nor amid lake scenery, and on the sunny side of the mountains. Men who seldom mix with their fellow-creatures are almost sure to be one-sided--the victims of fixed ideas, that sometimes lead to insanity.
William MatthewsAs frost, raised to its utmost intensity, produces the sensation of fire, so any good quality, overwrought and pushed to excess, turns into its own contrary.
William Matthews