Never find fault with the absent. Alexander Pope
Nothing would be done at all if one waited until one could do it so well that no one could find fault with it. John Henry Newman
I find fault with my children because I like them and I want them to go places - uprightness and strength and courage and civil respect and anything that affects the probabilities of failure on the part of those that are closest to me, that concerns me - I find fault. Branch Rickey
Put an Englishman into the garden of Eden, and he would find fault with the whole blasted concern; put a Yankee in, and he would see where he could alter it to advantage; put an Irishman in, and he would want to boss the thing; put a Dutchman in, and he would proceed to plant it. Josh Billings
Don't find fault with what you don't understand. French Proverb
Never find fault with the absent. Traditional Proverb