变化不仅仅是生活的必要，它就是生活本身。

"The past is always present in the way we live now."

The essence of mathematics is not to make simple things complicated, but to make complicated things simple.

真正的艺术家总是在寻找生命的意义。

Every saint has a past, and every sinner has a future.

最好的创新方式是从客户开始。