The power of positive thinking is the ability to generate a feeling of certainty in yourself when nothing in the environment supports you.

生活中唯一真正的失败是不忠于自己所知道的最好的东西。

In business, if you're not moving forward, you're falling behind.

The tears of the world are a constant quantity. For each one who begins to weep, somewhere else another stops. The same is true of the laugh.