All that writers can do is keep trying to say what is deepest in their hearts.
She has given you something of value: the truth in her heart.
Just because you've seen something doesn't mean you'll stop looking. There's always something you didn't see before.
In the race of men is much greed and envy; but of truth, little.
If we nourish imagination, we nourish everything else.
The Prydain Companion is more than a quick reference or handy glossary, though it is all of that as well. Instructive, certainly. But, like any good companion, a pleasure to be with over a long period of time.