Miyamoto Musashi, The Five Rings:
Do not allow your mind to become clouded, but make it expansive, and in this broadness you should place your wisdom. It is utmost importance to polish both your wisdom and your mindset devotedly.
Honing your wisdom, you will recognize what is right and wrong in any situation, and understand the good and bad of everything; knowing every art and skill, and being familiar with every Way, when you have achieved a condition where you cannot be tricked by anyone in the world in the tiniest way — that is the wisdom at the heart of strategy.
Sun Tzŭ, The Art of War:
He will win who knows when to fight and when not to fight…He will win who, prepared himself, waits to take the enemy unprepared…If you know neither the enemy nor yourself, you will succumb in every battle.
King Solomon, Proverbs:
Wisdom calls aloud in the street. She raises her voice in the public squares…Blessed is the man who finds wisdom, the man who gains understanding, for she is more profitable than silver and yields better returns than gold…preserve sound judgment and discernment, do not let them out of your sight; they will be life for you…whoever fails to find wisdom harms himself; all who hate me love death.