When there are duties to perform [true] servants and sons serve their labors.

Success depends upon previous preparation, and without such preparation there is sure to be failure.

At fifteen my mind was directed to study, and at thirty I knew where to stand.

In teaching there should be no distinction of classes.

The Master said, At fifteen I set my heart upon learning. At thirty, I had planted my feet firm upon the ground. At forty, I no longer suffered from perplexities. At fifty, I knew what were the biddings of Heaven. At sixty, I heard them with docile ear. At seventy, I could follow the dictates of my own heart; for what I desired no longer overstepped the boundaries of righ.

Virtuous people often revenge themselves for the constraints to which they submit by the boredom which they inspire.

There are three friendships which are advantageous, and three which are injurious. Friendship with the upright; friendship with the sincere; and friendship with the man of much observation: these are advantageous. Friendship with the man of specious airs; friendship with the insinuatingly soft; and friendship with the glib-tongued: these are injurious.