Mathematics is often erroneously referred to as the science of common sense. Actually, it may transcend common sense and go beyond either imagination or intuition. It has become a very strange and perhaps frightening subject from the ordinary point of view, but anyone who penetrates into it will find a veritable fairyland, a fairyland which is strange, but makes sense, if not common sense.
Source: E. Kasner and J. Newman, Mathematics and the Imagination, New York: Simon and Schuster, 1940.
Contributed by: Zaady