All men have the stars， but they are not the same things for different people。 For some， who are travelers， the stars are guides。 For others they are no more than little lights in the sky。 For others， who are scholars， they are problems。 For my businessman they were wealth。 But all these stars are silent。 You – you alone – will have the stars as no one else has them.

Whereof one cannot speak, thereof one must be silent.

学习数学的唯一方法就是做数学。

历史是一个庞大的预警系统。

I'm the reason your gravity won't pull.

你可以痴迷于服务你的客户/读者/客户，你也可以痴迷于击败竞争对手。两者都有效，但前者会让你走得更远。

We do not learn from experience... we learn from reflecting on experience.

唯一能拯救我们的是以不同的方式思考。