"Oh! Oh, all right, I'm sorry that might in retrospect not have been clear!"
"Remember, all this is a simplification, it can be complex and at higher levels things start to blur together, but-"
"Wizardry is the art of using your own awareness, your consciousness and intelligence, to alter the world. It's - some ideas, words, states of mind, they have mystic significance."
It's a little frivolous, but-
She flicks her wrist and her hand blazes suddenly bright with a handful of bluish fire.
"I can do this because I understand the Element that is Fire, because I have shaped a part of my mind and soul the right way, because I can think in the right sort of... pattern. But that can put enormous strain on your mind and soul, it's arcane. A poet once said wizards burn their own souls for power, and there's something to that."
"Spells are specific... fragments of sentience, you could say. A soul shaped like mine can contain them, it's the right shape, like a cup for water. They can do complicated things. But it's your wizardry controlling them still, like how water takes on the shape of a cup, you can affect how they come out, exactly how much depends a lot on you and a lot on the Spell. 'Spell slot'... it's a loose term for the Spells you can hold inside you. They're unique, in a way. When you cast a Spell it can - honestly the best way to think of it is that it leaves you, in practice it's more complicated, it's more that it sort of burns out, but best practice is to ignore them. That book was my spellbook - a copy of a Spell is that Spell, because they're ideas, so we use them to prepare Spells, get them to enter into us. That Spell is the safest one there is, it's a helpful invisible servile force - not a person, there's nobody having that idea of servility, it's just the idea itself. I would guess some part of you wanted the place cleaned? Spells take on some of your shape. I didn't know you thought I was so dirty."