The deepest theorems often have the simplest proofs - if you look at them from the right angle.

煤炭一直是工业的支柱，通过创新，它可以继续发挥作用。

在日本与宫崎寅藏谈论其革命宗旨与方法，1897年

The key to trading success is to have a clear plan and stick to it.

真相很少是纯粹的，也绝不简单。