The failure to cultivate virtue, the failure to examine and analyze what I have learned, the inability to move toward righteousness after being shown the way, the inability to correct my faults-these are the causes of my grief.

He who flatters a man is his enemy. he who tells him of his faults is his maker.

Even if people do not know what real kindness is, they nonetheless have it within them.

To think twice is quite enough.

The archer who misses his mark does not blame the target. He stops, corrects himself and shoots again.

He who merely knows right principles is not equal to him who loves them.

Learn, as if never overtaking your object, and yet as if apprehensive of losing it.