变化是必然的。和平之后是动荡;恶人的离去之后是他们的回归。
Change is certain. Peace is followed by disturbances; departure of evil men by their return.
如果主权者对一个臣民的要求比另一个臣民多的话,事情就变成个别的,他的权力也就不再凑效了。
玩耍是童年的语言,书籍也应该用这种语言表达。
Innovation is the key to sustainable development.
The mind is a dynamic system of interrelated processes.