一个公开的民意测验无法代替思考。

I want to stand as close to the edge as I can without going over. Out on the edge you see all kinds of things you can't see from the center.

荣枯互为倚伏，心田开合一切由己，顺与逆顺其自然，何必去问别人？长与短，四时运行，长寿或短命，一切都是自然而成，何必去怪别人。

通往可持续性的道路充满了挑战和机遇。