Warlock of the Witch World (1967)

It has been an oft-told story of our birthing that our mother, the Lady Jaelithe (she who put aside her witchhood in Estcarp to wed the outland warrior, Simon Tregarth), did demand of some Power she served certain gifts for us, whom she bore in great and painful travail. That she named my brother Kyllan, warrior, my sister Kaththea, witch (or one to control powers), and asked for me, wisdom. But it has been that my wisdom consists in knowing that I know very little, though the thirst for learning has ever been in me. Only, in spite of all my striving, I have done no more than nibble at the edges of knowledge's rich cake, liplicked the goblet of true wisdom. But perhaps to know one's limitations is, in itself, a kind of sagecraft.

And our tale of three has not yet ended.