Consideration for others is the basis of a good life, a good society.
Have no friends not equal to yourself.
Not to mend one's ways when one has erred is to err indeed.
An inch of time on the sundial is worth more than a foot of jade.
A man should demand much from himself, but little from others. When you meet a man of worth, think how you may attain to his excellence. When you meet an unworthy one, then look within and examine yourself.
It is better to light one small candle of gratitude than to curse the darkness.