“What is essential to practice the Tao is to get rid of cravings and vexations. If these afflictions are not removed, it is impossible to attain stability. This is like the case of the fertile field, which cannot produce good crops as long as the weeds are not cleared away. Cravings and ruminations are the weeds of the mind; if you do not clear them away, concentration and wisdom do not develop.”
– Chang San-feng, founder of T’ai Chi Ch’uan, circa 1300 A.D.