The causal model is the key to making sense of the world.
我们相信平凡的勇敢行为，相信那种驱使一个人为另一个人站出来的勇气。
It is far more difficult to murder a phantom than a reality.
Growth happens outside your comfort zone.
可持续发展不仅仅是一种趋势，而是我们对后代的责任。