Because in the school of the Spirit man learns wisdom through humility, knowledge by forgetting, how to speak by silence, how to live by dying.

Man must do his part and detach himself from created things.

If ye keep watch over your hearts, and listen for the Voice of God and learn of Him, in one short hour ye can learn more from Him than ye could learn from Man in a thousand years.

For where there is true love, a man is neither out of measure lifted up by prosperity, nor cast down by mishap; whether you give or take away from him, so long as he keeps his beloved, he has a spring of inward peace. Thus, even though thy outward man grieve, or weep downright, that may well be borne, if only thy inner man remain at peace, perfectly content with the will of God.

He who desires to become a spiritual man must not be ever taking note of others, and above all of their sins, lest he fall into wrath and bitterness, and a judging spirit towards his neighbors.