Sun Tzu wrote The Art of War more than 2500 years ago and it remains a basic text for those studying military history and strategy.
Its also a great read for traders because it captures the required mindset of a warrior when the game is zero sum. Specific quotes may resonate with a trader and inspire. Here are some that struck me and the translation of the entire text embedded below (HT to The Kirk Report who linked to this pdf a few weeks back):
… the general who wins the battle does many calculations in his temple ere the battle is fought…
It is only one who is thoroughly acquainted with the evils of war that can thoroughly understand the profitable ways of carrying it on…
He will win who knows when to fight and when not to fight
… the opportunity of defeating the enemy is provided by the enemy himself…