I'm not afraid to fail. I'm not afraid to take risks.

过去是活生生的。

定义就是限制。

You need to invent things and you need to get them to people. You need to commercialize those inventions. Obviously, the best way we’ve come up with doing that is through companies.

【大意】古来圣哲不珍视直径成尺的璧玉，却珍重每一寸光阴，因为时间最是难得，却最容易失去。