To find out a girl's faults, praise her to her girl friends.

I am about courting a girl I have had but little acquaintance with. How shall I come to a knowledge of her faults, and whether she has the virtues I imagine she has ? Answer. Commend her among her female acquaintances.

A benevolent man should allow a few faults in himself, to keep his friends in countenance

Love your enemies, for they tell you your faults

How few there are who have courage enough to own their faults, or resolution enough to mend them

There are three great friends: an old wife, an old dog, and ready money.