But the human mind, as Aristotle pointed out, has two activities: it concerns itself with knowing and with reasoning; it is passive, receptive, in that it receives ideas from without, and creative in that it can reflect on its own ideas and so create new ideas which are in no sense dependent on material objects—are, as we say, abstract ideas. To this creative part of man’s soul, to his reason alone, did Aristotle grant eternal existence and immortality. All other activities of the soul—knowing, moving, seeking, feeling, and assimilating—he held to be bound to the body and hence to perish with it; but the reasoning element he maintained was in no way dependent on the material world, was always active, and therefore it alone was immortal and eternal.[221] Yet after establishing the immortality of the reasoning element Aristotle failed to define the fate of the immortal human reason after death; of joys or pains beyond the grave he gave no description. In ethics Aristotle taught that the highest human good was that happiness which results when man’s mind under the direction of reason is active toward virtuous ends; that moral virtue is a habit which is acquired by cultivation, a condition which is attained when the appetites are controlled by the will and guided by the reason. Now in the Aristotelian system man alone was regarded as capable of moral action. The animals are guided by appetite and lack intelligence to direct them; God is pure reason and therefore we cannot attribute to him any moral qualities; but man possesses the characteristics of the lower creatures and has at the same time the divine element, the reason, which connects him with God. Therefore since man is endowed with reason which can either prompt the will to check the appetite or bid the will let appetite go its way, he is capable of choice and so of morality. By thus emphasizing the controlling function of the will Aristotle prepared the way for the Stoics, as we shall see in our next lecture. Virtue in the active life of society was to him always the mean between two extremes, both of which were themselves vices. Courage, for example, lies midway between cowardice and rashness; temperance between indulgence and abstinence; and so on through the whole range of the ethical virtues. Above these virtues of the active life, Aristotle placed a higher rank—the intellectual virtues of wisdom, knowledge, good-sense, practical insight, etc., which result from a harmony of the active and the receptive parts of the intellect. Highest of all he put the speculative activities of the intellect, which he regarded as its proper and most constant function. This “theoretical” or “contemplative” life (θεωρητικὸς βίος) he said brought man his highest happiness just because it was his highest activity. Yet Aristotle could not hold out the hope that men could attain this joy fully or in great numbers; he saw that the greater part of human