I'm not a builder, I'm a breaker.
The goal of mathematics is to make the simple complicated, and the complicated simple.
All things in their being are good for something.
试错的成本是最低的。
你说的话有什么益处呢?如果没有益处还要说,就是白费口舌。 
无畏不是没有恐惧。不是完全不害怕。无畏是有恐惧。无畏是有怀疑。很多怀疑。无畏是尽管有这些,依然每天生活。
The comfort of the rich depends upon an abundant supply of the poor.