可持续发展不仅仅是种树，而是在正确的地方为了正确的理由种植正确的树。

The past is never dead. It's not even past.

My garden is my most beautiful masterpiece.

科学是一段旅程，而不是终点。

The rule, or measuring rod, which the behaviorist puts in front of him always is: Can I describe this bit of behavior I see in terms of "stimulus and response"?

"The past is never dead; it’s not even past."

树木有根则繁茂，根腐则树枯萎；鱼有水才能活，水干涸了鱼则必死；灯有油才光亮，油尽则灯灭。人有真精神，保护则长寿，戕害则必死。