History of Western Philosophy - Bertrand Russell [261]
In connection with the intellect, the problem of universals is discussed. St Thomas's position is that of Aristotle. Universals do not subsist outside the soul, but the intellect, in understanding universals, understands things that are outside the soul.
The Third Book is largely concerned with ethical questions. Evil is unintentional, not an essence, and has an accidental cause which is good. All things tend to be like God who is the end of all things. Human happiness does not consist in carnal pleasures, honour, glory, wealth, worldly power, or goods of the body, and is not seated in the senses. Man's ultimate happiness does not consist in acts of moral virtue, because these are means; it consists in the contemplation of God. But the knowledge of God possessed by the majority does not suffice; nor the knowledge of Him obtained by demonstration; nor even the knowledge obtained by faith. In this life, we cannot see God in His essence, or have ultimate happiness; but hereafter we shall see Him face to face. (Not literally, we are warned, because God has no face.) This will happen, not by our natural power, but by the divine light; and even then, we shall not see all of Him. By this vision we become partakers of eternal life, i.e. of life outside time.
Divine Providence does not exclude evil, contingency, free will, chance or luck. Evil comes through second causes, as in the case of a good artist with bad tools.
Angels are not all equals; there is an order among them. Each angel is the sole specimen of his species, for, since angels have no bodies, they can only be distinct through specific differences, not through position in space.
Astrology is to be rejected, for the usual reasons. In answer to the question 'Is there such a thing as fate?' Aquinas replies that we might give the name 'fate' to the order impressed by Providence, but it is wiser not to do so, as 'fate' is a pagan word. This leads to an argument that prayer is useful although Providence is unchangeable. (I have failed to follow this argument.) God sometimes works miracles, but no one else can. Magic, however, is possible with the help of demons; this is not properly miraculous, and is not by the help of the stars.
Divine law directs us to love God; also, in a lesser degree, our neighbour. It forbids fornication, because the father should stay with the mother while the children are being reared. It forbids birth control, as being against nature; it does not, however, on this account forbid life-long celibacy. Matrimony should be indissoluble, because the father is needed in the education of the children, both as more rational than the mother, and as having more physical strength when punishment is required. Not all carnal intercourse is sinful, since it is natural; but to think the married state as good as continence is to fall into the heresy of Jovinian. There must be strict monogamy; polygyny is unfair to women, and polyandry makes paternity uncertain. Incest is to be forbidden because it would complicate family life. Against brother-sister incest there is a very curious argument: that if the love of husband and wife were combined with that