Kelly Link

but then warlocks were often improbably petty. It was one of the potential side effects of immortality. You got very bad at letting go of things

They are often portrayed as amoral beings, rather than as immoral ones, who simply have little comprehension of human notions of right and wrong.
The great English folklorist Katharine Briggs tended to avoid the “good” and “bad” division, preferring the categorizations of Solitary and Trooping Faeries instead.

Bishop Thomas Percy began to collect old English folk ballads, which he published in an influential volume called Reliques of Ancient English Poetry. Without Percy’s labors, many old poems and ballads might have been lost forever—he rescued one important manuscript from a cottager who was using it to light the fire