Bear in mind, however, that in all that we have noticed about the similarity between the Universe and the human being, nothing would warrant us to assert that man is a microcosm; for although the comparison in all its parts applies to the Universe and any living being in its normal state, we never heard that any ancient author called the ass or the horse a microcosm. This attribute has been given to man alone on account of his peculiar faculty of thinking, I mean the intellect, viz., the hylic intellect which appertains to no other living being. This may be explained as follows. An animal does not require for its sustenance any plan, thought or scheme; each animal moves and acts by its nature, eats as much as it can find of suitable things, it makes its resting-place wherever it happens to be, cohabits with any mate it meets while in heat in the periods of its sexual excitement. In this manner does each individual conserve itself for a certain time, and perpetuates the existence of its species without requiring for its maintenance the assistance or support of any of its fellow creatures; for all the things to which it has to attend it performs by itself. With man it is different; if an individual had a solitary existence, and were, like an animal, left without guidance, he would soon perish, he would not endure even one day, unless it were by mere chance, unless he happened to find something upon which he might feed. For the food which man requires for his subsistence demands much work and preparation, which can only be accomplished by reflection and by plan; many vessels must be used, and many individuals, each in his peculiar work, must be employed. It is therefore necessary that one person should organize the work and direct men in such a manner that they should properly co-operate, and that they should assist each other. The protection from heat in summer and from cold in winter, and shelter from rain, snow, and wind, require in the same manner the preparation of many things, none of which can properly be done without design and thought. For this reason man has been endowed with intellectual faculties, which enable him to think, consider, and act, and by various labours to prepare and procure for himself food, dwelling and clothing, and to control every organ of his body, causing both the principal and the secondary organs to perform their respective functions. Consequently, if a man, being deprived of his intellectual faculties, only possessed vitality, he would in a short time be lost. The intellect is the highest of all faculties of living creatures; it is very difficult to comprehend, and its true character cannot be understood as easily as man’s other faculties.