Generally speaking, yes. In fact, for St. Gregory of Nyssa, this was a critical factor in his becoming a universalist. As he saw it, the individual human soul is bound up with that of others in that our personal development always occurs in a profoundly interpersonal context. So the contours of our unique soul are the product of interactions with other souls. Authentically, then, our souls are not merely our own, nor are the souls of others merely theirs. Our souls form one point in a more extensive web of spirits, and removing one part of the web undermines the integrity of the rest. For this reason, to send one part of the web to heaven and another to hell, permanently anyway, would be to rupture the web, fracturing the individuals who comprise it. To be eternally separated from those we love would be to be eternally separated from ourselves; we would be in hell, even as we were in heaven. St. Aquinas's injunction that we will more fully appreciate the glories of heaven by watching those who remain locked outside it suffer is, in fact, an inversion of the truth. Human happiness is necessarily interpersonal, and God's paradise reflects this fact.