你必须强迫自己考虑相反的观点。特别是当它们挑战你最钟爱的想法时。

机会不会自己发生，你要去创造它们。

除非不再尝试，否则就没有失败。

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.