Gay Science, 321:
New caution.–Let us stop thinking so much about punishing, reproaching, and improving others! We rarely change an individual, and if we should succeed for once, something may also have been accomplished, unnoticed: we may have been changed by him. Let us rather see to it that our own influence on all that is yet to come balances and outweighs his influence. Let us not contend in a direct fight — and that is what all reproaching, punishing, and attempts to improve others amount to. Let us rather raise ourselves that much higher. Let us color our own example ever more brilliantly. Let our brilliance make them look dark. No, let us not become darker ourselves on their account, like all those who punish others and feel dissatisfied. Let us sooner step aside. Let us look away.
Path to the Possible 