"T’ai Chi Ch’uan as an art form of self-defense must completely spurn both physical bravery and muscular force. One is told that ‘in any action, the whole body must be made as light and free-moving as possible;’ so light that ‘the addition of a feather will be felt for its weight, and so free-moving that a fly cannot alight on it without setting it in motion.’"
-Cheng Man-Ch’ing