实现明天的唯一限制是我们今天的怀疑。
The only limit to our realization of tomorrow is our doubts of today.
Mental processes are means to ends in the struggle for existence.
一个公司的真正价值是由它对人类和地球的影响来衡量的。
The past is never dead. It's not even past.
The bitterest creature under heaven is the wife who discovers that her husband's bravery is only bravado.