Know Yourself And You Will Win All Battles

"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."

"If you know the enemy and know yourself, your victory will not stand in doubt; if you know Heaven and know Earth, you may make your victory complete."

"Knowing the enemy enables you to take the offensive, knowing yourself enables you to stand on the defensive."

"He will win who knows when to fight and when not to fight"

"Be kind, for everyone you meet is fighting a hard battle."

"You have power over your mind - not outside events. Realize this, and you will find strength."