当然，语言是人类使用的最强大的药物。
Words are, of course, the most powerful drug used by mankind.
书是你握在手中的一个梦。
唯一不变的就是变化本身，这是自然界一个永恒的主题。
The best time to start living intentionally is now.
The personal example of a teacher is the most useful sunshine that nothing can replace for the soul of young people.
You can't control what you don't measure.
科学是一段旅程，而不是终点。
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.