The main task in life is simply this: to identify and separate matters so that I can say clearly to myself which are externals not under my control, and which have to do with the choices I actually control.

Children aren’t coloring books. You don’t get to fill them with your favorite colors.

改变令人不适，但它是进步的必要条件。

The only strategy that is guaranteed to fail is not taking risks.

引用计算机科学家Alan Kay的观点