with a duller sense, in as great degree as those who on land are prostrated with fever; with respect to whom it is certain, that if the mind do not discharge its functions as well as before, in consequence of the attack of disease, the blame is to be laid not upon the place, but upon the bodily malady, by which the body, being disturbed and disordered, renders to the mind its customary services under by no means the well-known and natural conditions: for we human beings are animals composed of a union of body and soul, and in this way [only] was it possible for us to live upon the earth. But God, who is the beginning of all things, is not to be regarded as a composite being, lest perchance there should be found to exist elements prior to the beginning itself, out of which everything is composed, whatever that be which is called composite. Neither does the mind require bodily magnitude in order to perform any act or movement; as when the eye by gazing upon bodies of larger size is dilated, but is compressed and contracted in order to see smaller objects. The mind, indeed, requires magnitude of an intellectual kind, because it grows, not after the fashion of a body, but after that of intelligence. For the mind is not enlarged, together with the body, by means of corporal additions, up to the twentieth or thirtieth year of life; but the intellect is sharpened by exercises of learning, and the powers implanted within it for intelligent purposes are called forth; and it is rendered capable of greater intellectual efforts, not being increased by bodily additions, but carefully polished by learned exercises. But these it cannot receive immediately from boyhood, or from birth, because the framework of limbs which the mind employs as organs for exercising itself is weak and feeble; and it is unable to bear the weight of its own operations, or to exhibit a capacity for receiving training.