We change our behavior when the pain of staying the same becomes greater than the pain of changing.

The art of leadership is saying no, not saying yes. It is very easy to say yes.

The proper study of psychology is the prediction and control of behavior.

I'm just trying to be better every day.

太阳是我们在非洲最强大的工具。我们必须学会与它合作，而不是对抗它。

Art should break the boundaries between life and representation.

对于你所拥有的，要心存感激，这样你就会拥有更多。对于你所没有的，如果念念不忘，你永远都不会满足。