The absence is more important than the presence.

We are all prisoners of our own memories.

No president who performs his duties faithfully and conscientiously can have any leisure.

解释：占卜来解决疑惑，如果没有疑惑的话又何必占卜呢？

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。