Where returns are concerned, time is your friend. But where costs are concerned, time is your enemy.
在回报方面，时间是你的朋友。但在成本方面，时间是你的敌人。
你唯一应该回头看的时候是看你已经走了多远。
"The past is never truly gone; it lives on in the choices we make today."
We are at a unique stage in our history. Never before have we had such an awareness of what we are doing to the planet, and never before have we had the power to do something about it.
我总是尝试做一些不同的事情，一些能挑战我的事情。