All failure is failure to adapt, all success is successful adaptation.
Adaptability: The Art of Winning in an Age of UncertaintyNever open the door to a lesser evil, for other and greater ones invariably slink in after it.
The Art of Worldly WisdomFor the advice in a joke is sometimes more useful than the most serious teaching.
The Art of Worldly WisdomWhen you surround an army, leave an outlet free. Do not press a desperate foe too hard.
The Art of WarBegin by seizing something which your opponent holds dear; then he will be amenable to your will.
The Art of WarThe principle on which to manage an army is to set up one standard of courage which all must reach.
The Art of WarThe whole secret lies in confusing the enemy, so that he cannot fathom our real intent.
The Art of WarYou can be sure of succeeding in your attacks if you only attack places which are undefended.
The Art of WarYou can ensure the safety of your defense if you only hold positions that cannot be attacked.
The Art of War