The why is plain as way to parish church:
He that a fool doth very wisely hit
Doth very foolishly, although he smart,
Not to seem senseless of the bob; if not,
The wise man's folly is anatomiz'd
Even by the squand'ring glances of the fool.
The wise man does not lay up treasure. The more he expends on others, the more he gains for himself. The more he gives to others, the more he has for his own.
At the gates of the forest, the surprised man of the world is forced to leave his city estimates of great and small, wise and foolish. The knapsack of custom falls off his back with the first step he makes into these precincts. Here is sanctity which shames our religions, and reality which discredits our heroes. Here we find Nature to be the circumstance which dwarfs every other circumstance, and judges like a god all men that come to her.
Even if a fool lived with a wise man all his life, he would still not recognise the truth, like a wooden spoon cannot recognise the flavour of the soup.
Life is such a mystery, no one can understand it, and one who claims that he understands it is simply ignorant. He is not aware of what he is saying, of what nonsense he is talking. If you are wise, this will be the first realization: life cannot be understood. Understanding is impossible. Only this much can be understood - that understanding is impossible.