Logic, Rationalism, and Rome

It is quite clear to us why Western theologians with all their logical scrupulousness could not see the unity of the Church in any other way but through the outward unity of the episcopate... This also explains why they could assign an essential worthiness to the outward works of a man; why, when a soul was inwardly prepared but had an insufficiency of outward works, they could conceive of no other means of his salvation than a definite period of purgatory; why, finally, they could assign to certain men even an excess of worthy outward deeds and give this worthiness to those who had insufficient outward deeds.

- Ivan Kireyevsky, as quoted in Fr. Seraphim Rose: His Life and Works