While day by day the overzealous student stores up facts for future use, He who has learned to trust nature finds need for ever fewer external directions. He will discard formula after formula, until he reaches the conclusion Let nature take its course. By letting each thing act in accordance with its own nature, everything that needs to be done gets done.
Without going outofdoors, one can know all he needs to know. Without even looking out of his window, one can grasp the nature of everything. Without going beyond his own nature, one can achieve ultimate wisdom. Therefore, the intelligent man knows all he needs to know without going away, And sees all he needs to see without looking elsewhere, And does all he needs to do wihout undue exertion.