Identify your problems, but give your power and energy to solutions.

A proof of a proposition is a process the nature of which is such as to produce in us a belief in that proposition.

名声不是凭空产生的,赞誉也不会自己增长,只有成就了功业,名声才会到来。

在经济学中，魔鬼往往藏在细节里。