Myth Drannan Amphigory
[Here is a copy of Elminster's Myth Drannan Amphigory. It's a good edition, well-kept and stiff-spined. Reading an excerpt,  you can see Elminster's style coming through the heavy notation scholars have added after the fact:] I attended a lecture yesterday by an elven sage about the eclipse-logic theory of magic. Sweat beaded her brow. I got the impression she was new to the pulpit and the greedy eyes of ambitious students. The eclipse-logic theory as framed by her gives the impression that a big enough personality is imbued with a kind of unique magic. Think of an eclipse, with one astral phenomenon obstructing the other, and with variant states of eclipse resulting in the abatement of light and the creation of new and interesting shadows. Transformation by encounter. Personality, this elven sage posited, is like that. On one hand she's demonstrably right. But while identifying stars she's missed the shape of the galaxy. Stepping back a moment, we see that while certain iconic people have achieved great things by magical means, the qualities we would ascribe as their personalities are not fixed, though the extent of their prowess is (if not aligned) then comparable. So while emotion holds power, and significance, the scope and weight and taxonomic signifiers of that power eludes us like the darkr side of the sun-darkening moon.