Great deeds are usually wrought at great risks.

When public speaking， pause frequently. Pause before you say something in a new way， pause after you have said something you believe is important， and pause as a relief to let listeners absorb details.

我们需要从所有权转向使用权——从产品转向服务。

节俭：只为对人对己有益的事情买单，即不要浪费。