Without sacrifice, there is no freedom.

The environment is not a mosaic of stimuli, but a field of forces in which every part is dynamically related to every other part.

人比自己想象的更被他人支持。

创造意味着热爱生活。只有当你足够热爱生活，想要增添它的美丽时，你才能具有创造力。

Active management is a negative-sum game before costs and a loser's game after costs.

改变世界不需要魔法，我们体内已经蕴藏了所有力量。