Before men can be truly wise, they must realize their dependence upon God, and be filled with His wisdom. God is the source of intellectual as well as spiritual power. The greatest men who have reached what the world regards as wonderful heights in science are not to be compared with the beloved John or the apostle Paul. It is when intellectual and spiritual power are combined that the highest standard of manhood is attained. Those who do this, God will accept as workers together with Him in the training of minds.
To know oneself is a great knowledge. The teacher who rightly estimates himself will let God mold and discipline his mind. And he will acknowledge the source of his power. … Self-knowledge leads to humility and to trust in God, but it does not take the place of efforts for self-improvement. He who realizes his own deficiencies will spare no pains to reach the highest possible standard of physical, mental, and moral excellence. No one should have a part in the training of youth who is satisfied with a lower standard.