每个程序都有(至少)两个目的:一个目的是为它编写的,另一个不是目的。
The only real light is the light of the soul.
"Art is not a mirror held up to reality but a hammer with which to shape it."
The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
Interest is the first and most important ingredient in the recipe for grit.