2. The plants have not so much as the use of appearances, therefore we speak not of the Good in their regard. The Good, then, needs the power of using appearances. And this alone? Nay; for if so, say then that Good and Happiness and Unhappiness are with the lower animals too. But this you will not say, and you are right; for though they possessed the use of appearances in the highest degree, yet the observing and considering of this use they do not possess, and naturally so, for they exist to serve others, nor have any supreme object in themselves.[1] For the ass was not made for any supreme object in himself? Nay, but he was made able to bear, because we had need of a back; and, by Zeus, we had need moreover that he should walk; wherefore he received also the power to use appearances, else had he not been able to walk. And thereupon the matter stopped. For had he also received the observing and considering of the use of appearances, it is clear that in reason he could no longer have been subject to us, nor have served those needs of ours, but he had been our equal and our like. 3. For use is one thing, and observation and study is another. God had need of the other animals to use appearances, but of us to observe and study appearances. Wherefore it is enough for them to eat and drink, and rest and breed, and do whatever else each of them performs, but to us, to whom the faculty of observing and studying hath also been given, these things are not enough; but unless we act after a certain manner and ordinance, and conformably to the nature and constitution of man, we shall never attain the end of our being. For where the constitution is different, different there also is the task and the end. When, therefore, the constitution is one for use alone, then the use, of whatever kind it be, is enough; but where there is also observing and studying of the use, then, unless the due employment of this faculty be added, the end shall never be gained. What then? God hath constituted every other animal, one to be eaten, another to serve for tilling the land, another to yield cheese, another to some kindred use; for which things what need is there of the observing and studying of appearances, and the ability to make distinctions in them? But man he hath brought in to be a spectator of God and of His works, and not a spectator alone, but an interpreter of them. Wherefore it is shameful for a man to begin and to end where creatures do that are without Reason; but rather should he begin when they begin, and end where Nature ends in ourselves. But she ends in contemplation, in observing and studying, in a manner of life that is in harmony with Nature. See to it, then, that ye die not without having been spectators of these things. 4. Seek, then, the essence of the Good there, where if it be not, thou wilt not say that the Good is in any other thing.