There is one word which may serve as a rule of practice for all one's life -reciprocity.
All men are born good.
Things that are done, it is needless to speak about...things that are past, it is needless to blame.
Let a ruler base his government upon virtuous principles, and he will be like the pole-star, which remains steadfast in its place, while all the host of stars turn towards it
A gentleman considers what is right; the vulgar consider what will pay.
He who speaks without modesty will find it difficult to make his words good.