The teachings of the Old Philosopher were summed up in the word _Tao_, pronounced as _tou(t)_, which originally meant a road, a way; and as applied to doctrines means simply the right way or path of moral conduct, in which mankind should tread so as to lead correct and virtuous lives. Later on, when Buddhism was introduced, this Taoism, with all its paradoxes and subtleties, to which alchemy and the concoction of an elixir of life had been added, gradually began to lose its hold upon the people; and in order to stem the tide of opposition, temples and monasteries were built, a priesthood was established in imitation of the Buddhists, and all kinds of ceremonies and observances were taken from Buddhism, until, at the present day, only those who know can tell one from the other. Although alchemy, which was introduced from Greece, via Bactria, in the second century B.C., has long ceased to interest the Chinese public, who have found out that gold is more easily made from the sweat of the brow than from copper or lead; and although only a few silly people now believe that any mixture of drugs will produce an elixir of life, able to confer immortality upon those who drink it; nevertheless, Taoism still professes to teach the art of extending life, if not indefinitely, at any rate to a considerable length. This art would probably go some way towards extending life under any circumstances, for it consists chiefly in deep and regular breathing, preferably of morning air, in swallowing the saliva three times in every two hours, in adopting certain positions for the body and limbs, which are also strengthened by gymnastic exercises, and finally, as borrowed from the Buddhists, in remaining motionless for some hours a day, the eyes shut, and the mind abstracted as much as possible from all surrounding influences. The upshot of these and other practices is the development of "the pure man," on which Chuang Tzu (_Chwongdza_), a Taoist philosopher of the third and fourth centuries B.C., to be mentioned again, writes as follows: "But what is a pure man? The pure men of old acted without calculation, not seeking to secure results. They laid no plans. Therefore, failing, they had no cause for regret; succeeding, no cause for congratulation. And thus they could scale heights without fear; enter water without becoming wet, and fire without feeling hot. The pure men of old slept without dreams, and waked without anxiety. They ate without discrimination, breathing deep breaths. For pure men draw breath from their heels; the vulgar only from their throats."