Be ye therefore perfect, eve as your Father who is in heaven is perfect. – Bible

Certain flaws are necessary for the whole. It would seem strange if old friends lacked certain quirks. – Goethe

A man would do nothing if he waited until he could do it so well that no one could find fault. – John Henry Newman

Perfect works are rare, because they must be produced at the happy moment when taste and genius unite; and this rare conjuncture, like that of certain planets, appears to occur only after the revolution of several cycles, and only lasts for an instant. – Vicomte De Chateaubriand