Often regarded as the oldest surviving work on strategy, the Sun Tzu text has influence in many quarters today. This study organizes Sun Tzu’s ideas under fourteen thematic headings. It also clarifies Sun Tzu’s limitations and blind spots. Building on Brigadier General Samuel B. Griffith, USMC (Ret.)’s translation, this study analyzes Sun Tzu from three standpoints: Sun Tzu (1), Sun Tzu’s ideas in their original Warring States Chinese context; Sun Tzu (2), Sun Tzu’s ideas applied to warfare in a military sense in other times and places; Sun Tzu (3), generalizations of those ideas, including to cyber warfare and other twenty-first-century strategic competitions. Whereas Sun Tzu (1) analysis addresses ways in which the text is a product of its times, intertwined with traditional Chinese cultural milieux, Sun Tzu (2) and (3) analyses, often building on analogical thinking, map universalistic aspects of Sun Tzu’s insights into war and conflict, strategy, logistics, information, intelligence, and espionage. Those analyses also identify ways in which Sun Tzu’s thinking has relevance to gaining strategic advantage in twenty-first-century conflicts.