The greatest discovery of my generation is that a human being can alter his life by altering his attitudes.

The greatest discoveries are often the result of many small steps.

你是自己故事的作者。

我不断看到生活中的人崛起，他们不是最聪明的有时甚至不是最勤奋的。但他们是学习机器；他们每天晚上睡觉时都比起床时聪明一点。