在数学中，你不理解事物。你只是习惯它们。

聪明是一种天赋，善良是一种选择。

Optimism is a learned skill. Once you learn it, you can improve your life in every way.

The Worldly Hope men set their Hearts upon Turns Ashes—or it prospers; and anon, Like Snow upon the Desert's dusty Face, Lighting a little hour or two—is gone.

I went to the woods because I wanted to live deliberately. I wanted to live deep and suck out all the marrow of life. To put to rout all that was not life. And not, when I had come to die, discover that I had not lived.

Education is an admirable thing. But it is well to remember from time to time that nothing that is worth knowing can be taught.

The truth is, we are all waiting to be told who we are.

真正的创新需要冒险。