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One should be in harmony with, not in opposition to, the strength and force of the opposition. This means that one should do nothing that is not natural or spontaneous; the important thing is not to strain in any way.

Bruce Lee (2015). “Bruce Lee The Tao of Gung Fu: A Study in the Way of Chinese Martial Art”, p.119, Tuttle Publishing
One should be in harmony with, not in opposition to, the strength and force of the opposition. This means that one should do nothing that is not natural or spontaneous; the important thing is not to strain in any way.