What three men know, all the world knows.
Never let a bad man know thy mishaps; for from a bad man thou shalt never get reward for thy sincerity.
I shall presently give you some modern examples in regard to the advice concerning bad men.

Another thing to be cautious about is praise.

If you have to be careful about blame, you must be very cautious also about praise.
Praise the day at even-tide; a woman at her burying; a sword when it has been tried; a maid when she is married; ice when you have crossed over it; ale when it is drunk.
If there is anything noteworthy in English character to-day it is the exemplification of this very kind of teaching.

This is essentially Northern.

The last people from whom praise can be expected, even for what is worthy of all praise, are the English.