Power rests on the kind of knowledge that one holds.
Going to knowledge or going to war in any other manner is a mistake, and whoever makes it might never live to regret it. If such a man fails, or suffers a defeat, he will have lost only a battle, and there will be no pitiful regrets over that. A man in that position is deaf an blind to everything else. The fatigue itself makes him cease to see the marvels all around him. Every time a man set himself to learn, he has to labor as hard as anyone can, and the limits of his learning are determined by his own nature.