The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.
A book is a version of the world. If you do not like it, ignore it; or offer your own version in return.
在数学中，旅程和目的地同样重要；发现的过程才是真正学习的地方。
We must invest in our people as much as we invest in our technology.