每一种化学结合完全且仅仅依赖于两种对立的力量，即正电和负电。

Leadership means listening more than you speak, and acting more than you promise.

Happiness is not just the absence of sadness; it's the presence of meaning.

能改过自新，天地都会转怒为喜；能安分守己，鬼神也是无可奈何。