This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.
Sun Tzu once said that "the greatest victories are those won without fighting". When Malcolm Reed quoted him thus to Marab in 2154, the Klingon replied with the opposite viewpoint of Kahless, who had once said "there is no victory without combat". (ENT: "Divergence")
Sun Tzu also said "All warfare is based on deception. When you are able to attack, you must seem unable.", as well as "He will triumph who knows when to fight and when not to fight", and "Know your enemy and know yourself, and you will always be victorious" (DIS: "Battle at the Binary Stars";TNG: "The Last Outpost")
The strategies of Sun Tzu were still taught at Starfleet Academy during the 24th century. Both Jean-Luc Picard and William T. Riker were familiar with his works; upon reading Riker's mind in 2364, Portal 63 was fascinated by Sun Tzu's wisdom and considered it similar to Tkon thinking. (TNG: "The Last Outpost")