改变带来灵感的频率远高于灵感带来改变。
Change will lead to inspiration far more often than inspiration will lead to change.
Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers.
The universe would look to a two-dimensional creature who spend its life moving on the service of what turned out to be a globe， it could travel for millions of years and would always return to its starting point， it would never be conscious of what was above it or beneath it.
A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.
