没有事情的时候，需要照管这颗心，小心谨慎，好像有事一样；有了事情的时候，却要放下这颗心，泰然自得，好像没事一样。没有事情能像有事一样提防，才可以平息意想不到的变故；有了事情能像无事一样镇定，才能消除事件过程中的危机。

解释：身居高位的人容易骄纵自满，处于安乐生活中的人容易奢侈。

"The more acute the experience, the less articulate its expression."

With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.

The human brain is a social brain, and it evolved to deal with social relationships.