If you have heard of Sun Tzu and “The Art of War,” then you’ve probably seen this:

If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.”

That usually gets boiled down to the phrase: “Know thy enemy.” The philosophy has been taken several ways, ranging from simply understanding the practical strategies and tactics of an enemy, to understanding their core values and mindsets, and translating them to the battlefield.

However, Sun Tzu’s book is full of nuggets that are not often quoted but hold just as much wisdom.