The Folly of self Trust

Ecclesiastes 11:7 Truly the light [is] sweet, and a pleasant [thing it is] for the eyes to behold the sun:
11:8 But if a man live many years, [and] rejoice in them all; yet let him remember the days of darkness; for they shall be many. All that cometh [is] vanity.
11:9 Rejoice, O young man, in thy youth; and let thy heart cheer thee in the days of thy youth, and walk in the ways of thine heart, and in the sight of thine eyes: but know thou, that for all these [things] God will bring thee into judgment.
11:10 Therefore remove sorrow from thy heart, and put away evil from thy flesh: for childhood and youth [are] vanity.

In the battle with inward sin and outward temptation, even the wise and powerful Solomon was vanquished. His failure teaches us that, whatever a man's intellectual qualities may be, and however faithfully he may have served God in the past, he can never with safety trust in his own wisdom and integrity. {PK 82.2}