“The art of war can be learned,” he told me. “But after the principles are learned, the rest is ingenuity, the gift that goes beyond learning, or the instinct born of understanding.
“There are good ways and bad ways of attacking fortified positions, of crossing streams under attack, or withdrawing when the situation is no longer favorable.
“Learn the accepted modes of attack and defense, then use the variations that are your own. Masters of battle know what has already been done, then go beyond it with skill and discretion. Alexander, Hannibal, Belisarius…study them. They were masters.” – Louis L’Amour, Sackett’s Land