Taoism ... is the Religion of the Tao, a term meaning Path or Way, but denoting in this peculiar case the way, course or movement of the Universe, her processes and methods. In other words, Taoism is the Religion of Heaven and Earth, of the Cosmos, of the World or Nature in the broadest sense of these words. Hence we may call it Naturism.
Jan Jakob Maria de Groot (1892). “The Religious System of China: Its Ancient Forms, Evolution, History and Present Aspects, Manners, Custom and Social Institutions Connected Therewith”, p.66, Brill Archive