Without stumbling, one cannot understand the hardships of the journey; without failure, one cannot grasp the taste of pain. A life devoid of setbacks is ultimately an incomplete one.
Sun Tzu emphasizes that military strategy should not be bound by rigid rules but should adapt to changing circumstances. The core principle is flexibility. If a commander can accurately grasp the shifts in enemy strength, friendly forces, and terrain, and make timely decisions, they can seize the initiative and achieve victory.
As the saying goes, "Only by enduring the bitterest hardships can one rise above others." Throughout history, All great achievers have been forged through hardship and exhaustion. For ordinary people, pursuing a sweet and happy life also requires perseverance and endurance. Merchants must endure the toil of travel; students must endure the loneliness and hardship of long years of study; and workers must endure the exhaustion of early mornings and late nights. The path of life is often strewn with thorns, and most things do not go as planned. Only through perseverance can one cultivate true ability and experience the joy of "sweetness after bitterness." In essence, endurance is the most fundamental skill in the art of living.