Tolkien's moral dilemma

A more serious problem arose for Tolkien, especially with apparently wholly evil beings, especially Orcs, but it applies also to others such as Wargs and Trolls. Since in Catholic theology evil cannot make, only mock, Orcs cannot have an equal and opposite morality to that of Men; but since they can reason about their lives and have a moral sense (though they are unable to keep to it), they cannot be described as wholly evil.[2][10][T 14] Medieval image of cosmology of higher and lower being...

 History in "A Song of Ice and Fire"

In this, the obvious contrast is with the only work of fantasy to compare in terms of ambition and achievement to Martin's own: The Lord of the Rings. Tolkien's Middle-earth, unlike Westeros, is the creation of a dauntingly learned scholar: his ambition was to fashion from the languages, literature and history of the early middle ages an invented mythology that would nevertheless retain the stamp of the period that had inspired it. Martin's approach is infinitely more slapdash. Just as the ch...