Is the doctrine of reincarnation necessary to account for qualities? Surely these are inherited from the parents.
Physical qualities are inherited, but while they may be fairly uniform among siblings the latter’s personalities may be quite different and genetics cannot explain these differences. It is true that two artistic parents might have an artistic child, but that is not to say that the child has inherited the quality as part of its physical make up. The doctrine of reincarnation states that because of the law of affinity the parents would probably attract an artistic ego which would then be incarnated into a physical body conceived by them. Incarnating egos are drawn towards compatible family situations or those conforming with their needs or nature.