Some know much, but not enough for joy. They know what is false, but not what is true. They seek truth, but not perfection. They sacrifice much, but not their suffering. They give much, but not their life. They love truth, but will not become that love.
I tell you, the children must be encouraged. If you tell them "nobody is perfect" they will not seek perfection. If you tell them that some things cannot be known, they will not try to know them. If you tell them they must be human, they will remain human. I beg of you, my brothers and sisters, give me a Superman!
When a child thinks they have reached the pinnacle, in academia or in sport, then show them where they stand in relation to the eternal - thus encouraging them onwards. If you let them settle with grand ideas of themselves they will resent you later on. For there will be a rude awakening, and they will be ill-equipped to cope with it. But point to the horizon, and urge them forth, and their humility alone will be sufficient to forge a path and propel them along it.
So just make sure you teach by example and seek only the supreme joy of wisdom. Do you have it in you to pass-up the joys of talent? Oh how success cripples!