The brave may not live forever, but the cautious do not live at all.

最大的风险是不冒任何风险。在一个快速变化的世界里，唯一注定失败的策略就是不冒险。

The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

你做得越多，学到的就越多。你学到的越多，你能做的就越多。