我们称之为管理的大部分内容，实际上是让人们难以完成工作。

Not life, but a good life, is to be chiefly valued.《克里托篇》

最优雅的证明是那些清晰地揭示问题本质的证明。

You can't go home again.

Only those who will risk going too far can possibly find out how far one can go.

成功很好，但那不是我创作音乐的原因。