The world is full of people whose notion of a satisfactory future is, in fact, a return to the idealised past.
世界上充满了这样的人，他们心目中令人满意的未来，实际上是对理想化过去的回归。
Sustainability isn't an option; it's a necessity for the future of our planet.
Conflict is the gadfly of thought. It stirs us to observation and memory. It instigates to invention. It shocks us out of sheeplike passivity, and sets us at noting and contriving.
Sustainability isn't an option; it's a responsibility we all share.
So, I'm going to end it there. But what I really want to stress is: by all means, success, yes. But let's accept the strangeness of some of our ideas. Let's probe away at our notions of success. Let's make sure our ideas of success are truly our own.
以前的事不要再评说了，做完的事不要再议论了，过去了就不要再追咎。