“Perfect is the enemy of good.”
“The perfect is the enemy of the good.”
“Don't let the perfect be the enemy of the good.”
“The enemy of a good plan is the dream of a perfect plan.”
“Le mieux est l'ennemi du bien. (The perfect is the enemy of the good.)”
“The perfect society to which we aspire in theory may become a powerful enemy of the good society we can become in fact.”