数学的本质在于其自由性。

A wise man said， “Before you speak， let your words pass through three gates. At the first gate， ask yourself， “Is it true？” At the second gate ask， “Is it necessary？” At the third gate ask， “Is it kind？”

We don't need more icons, we need more good buildings.

金钱只是一个工具。它会带你去任何你想去的地方，但它不会代替你成为司机。

I never buy anything unless I can see a clear path to a 50% gain.