诗人的心是一面镜子，反映世界的美丽和痛苦。

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"?

释义：云彩积得厚，雨就一定下得猛；弓弩很强劲，箭就一定射得远。说明成功从来都不是一蹴而就的，而是需要一个厚积薄发的过程。