真正的对立是在自我束缚的人（其存在由拥有的原则构成）和自由的人（其存在由存在的原则构成）之间。
The real opposition is that between the ego-bound man, whose existence is structured by the principle of having, and the free man, whose existence is structured by the principle of being.
We change our behavior when the pain of staying the same becomes greater than the pain of changing. Consequences give us the pain that motivates us to change.
La palabra es el arma más poderosa que tenemos.
Every fish we farm is one less taken from the wild.
释义：在早晨有所失，在晚上有所获得。