Now, our author puts this important question: What thing is to be considered as the mover of the forms and ideas? We know, says he, that the human body has its beginning in the womb of the mother; we are acquainted with its position in that fœtid and narrow prison; its being surrounded with nerves, veins, &c., having above it the new elements, and under it the old ones. The manner in which the body originates in the womb much resembles the process by which worms and insects are formed in rotten substances, and in putrid and stagnant water. But this is not accounting for the real cause of living bodies. The real causes, according to some doctors, are five in number, viz., ignorance, concupiscence, desire, _kan_ (the influence of merits and demerits), and _ahan_ (the aliments). They concur together in the formation of the living body in the following manner. Ignorance, concupiscence, and desire give asylum to the body, as the mother supplies the infant with a refuge in her womb. Kan, like the father, is the cause productive of the body. Ahan affords nourishment to the body. The ideas are but the result of the formation of the organs of senses. Let us suppose, for instance, the organ of seeing. The _Tsekkou Wignian_, that is to say, the life of the eyes, or the ideas connected with the use of that sense, presupposes two things, the organ and a form or an object on which the organ acts. These existing, there necessarily result the idea of vision, the perception, &c., in a word, all the ideas arising from the action of the eyes upon various objects. The same mode of arguing is employed relatively to the other five senses.