没有道德或不道德的书，只有写得好或写得差的书。

学习是系统中产生的任何变化，这些变化或多或少会永久性地改变其适应环境的能力。

There are only two things in life that are busy living and dying.

This world is filled with ups and downs. Take turns lending a helping hand in times of need. That's as it should be.

邪恶胜利的唯一必要条件是好人无所作为。

解析：圣人能体会天地民物之情。