The Rule of Precedence. No sorcery student can become superior to his teacher, if the latter is capable, because his instructor’s depth of knowledge is known only to himself. Any student who aspires to surpass his teacher is merely bad-mannered. Because a student does not know as much as his teacher, each generation of sorcerers is less skilled than the previous one and modern magicians are not able to duplicate the magical feats performed by past sorcerers. For this reason, sorcery has lost much of its grandeur.
Tzu, Min. Chinese Taoist Sorcery – The Art of Getting Even (Kindle Locations 1752-1756). Vision Press Films. Kindle Edition.