最大的智慧是认识自己。
The more time I spent on mathematics, the more excited I got.
我不是榜样，我是目标模型。
In the desert, I had found a freedom unattainable in civilization.
Psychology must be based on observable facts, not speculation.
When we thin forests with purpose, we're not taking away life—we're making room for more life to flourish.
The world is a book, and those who do not travel read only one page.