There is no definitive answer to this question, as it is a popular saying that has been attributed to a number of different people over the years. However, the most likely candidate for its origin is the Chinese philosopher Lao Tzu, who wrote in his book Tao Te Ching that before enlightenment, chop wood carry water; after enlightenment, chop wood carry water. Other notable figures who have been associated with this saying include the Buddha and the 12th-century Zen master Dogen. Regardless of its origins, the meaning of the phrase is clear: that even mundane tasks can be performed with mindfulness and purpose, and that true wisdom lies in living in the present moment.