When he utilises combined energy, his fighting men become as it were like unto rolling logs or stones. For it is the nature of a log or stone to remain motionless on level ground, and to move when on a slope; if four-cornered, to come to a standstill, but if round-shaped, to go rolling down.

Sun Tzu's quote speaks to the principle of synergy in strategic thinking, illustrating how collective energy transforms disparate individuals into a formidable, cohesive force. The imagery of logs and stones suggests that without the right conditions—like a slope—individual efforts can remain stagnant. However, when aligned with a common purpose or direction, collective momentum creates powerful movement and impact, akin to a rolling stone that cannot be easily stopped. In a modern context, this idea can be applied across various fields such as business, sports, and community organizing. For instance, in a corporate environment, teamwork is essential; when employees collaborate and leverage their diverse skills toward a unified goal, the potential for innovation and productivity increases significantly. Just as a stone rolls when inclined, the right leadership can create an atmosphere that encourages everyone to move in sync, overcoming challenges with agility and power. Furthermore, this concept emphasizes the importance of finding the right environment or conditions that enable this collective energy. This can mean fostering a supportive company culture, creating clear and inspiring goals, or empowering individuals to contribute their unique strengths. Additionally, this principle is echoed in project management, where interdisciplinary teams work together. When individuals understand that their roles contribute to a greater vision, they become more engaged and motivated, much like logs or stones that gain momentum when on a slope. Ultimately, Sun Tzu’s wisdom highlights that harnessing collective energy and synergy not only promotes efficiency but also builds resilience, making teams more capable of navigating challenges and achieving success in a complex and ever-changing landscape.