In the relationships which bind us only by one small part, we need look out only for the imperfections that particularly concern that part. The religion of my doctor or my lawyer cannot matter. That consideration has nothing in common with the functions of the friendship they owe me. And in the domestic relationship between me and those who serve me, I have the same attitude. I scarcely inquire of a lackey whether he is chaste; I try to find out whether he is diligent. And I am not as much afraid of a gambling mule driver as of a weak one, or of a profane cook as of an ignorant one. I do not make it my business to tell the world what it should do – enough others do that – but what I do in it.
-Montaigne, Of friendship