我步入丛林，因为我希望生活有意义。我希望活得深刻，吸取生命中所有精华。把非生命的一切都击溃。以免，当我生命终结，发现自己从没有活过。
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.
Stories you read when you're the right age never quite leave you. You may forget who wrote them or what the story was called. Sometimes you'll forget precisely what happened, but if a story touches you it will stay with you, haunting the places in your mind that you rarely ever visit.
The worst thing in the world that can happen to you if you’re an engineer that has given his life to develop something is for someone to just rip it off.
The only way of discovering the limits of the possible is to venture a little way past them into the impossible.
"It takes ten times as long to put yourself back together as it does to fall apart."