But the adult is not the highest stage of development.
The end of the cycle is that of the independent, clear-minded,
all-seeing Child. That is the level known as wisdom. When the
Tao te Ching and other wise books say things like, "Return to
the beginning; become a child again" that's what they are
referring to. Why do the enlightened seem filled with light and
happiness like children? Why do they sometimes even look and talk
like children? Because they are. The wise are Children Who Know.
Their minds have been emptied of the countless minute somethings
of small learning and filled with the great wisdom of the Great
Nothing, the Way of the Universe.