Parents wonder why the streams are bitter, when they themselves have poisoned the fountain.
Be the change you wish to see.
教师必须具有健康的体魄,农人的身手,科学的头脑,艺术的兴味,改革社会的精神。
Happiness depends upon ourselves.
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.