The energy crisis is a solvable problem—if we act now.

I’m a very positive thinker, and I think that is what helps me the most in difficult moments.

The past is a map, showing us where we have been.

Make decisions when you are ready, not under pressure. Others will always push you to make a decision for their own purposes, internal politics, or some other external need. But you can almost always say, “I need a little more time to think about this. I’ll get back to you.” This tactic is very effective at defusing even the most difficult and uncomfortable situations.

有时最重要的实验是那些失败的实验，因为它们教会我们什么是行不通的。

人为什么想要只狗，我想是为了安全。当你知道这个世界上至少还有一个生物在爱着你，这会让你感到安全。

The difference between perseverance and obstinacy is that one comes from a strong will, and the other from a strong won’t.