Labor is the source of all wealth and all culture.

我们不需要完美的知识来采取明智的行动。

I don't think about age. I think about life and living.

In the wild, there are no second chances. You have to get it right the first time.

译文：学习、询问、思考、辨析、实践，都是做学问的方法，没有只学习而不实践的。

人生来就不是为了被打败的。人能够被毁灭，但是不能够被打败。