"We are discussing a small part of the theoretical area of magic as our first lesson because these laws are important to know going forward. Would you explain division to a child without explaining that you cannot divide by zero? As self-evident as the second and third laws may appear to be, they deserve to be iterated. If you are anxious to strengthen your power, do not worry. You will have that opportunity later."
With Lyle attended to, Mister T finishes etching out the third and final law.
"3. Magic cannot create an absolute."
Walking back and forth at the front of the class once more, he begins an explanation similar to the others on what exactly the third law meant.
"The third law is, similar to the second law, one of the few logical laws that magic actually follows. Its name is somewhat self explanatory, but I will endeavor to explain."
The teacher makes a gesture, and once more a simple animation plays out on the board.
This time, the young mage casts a spell forming a length of wood upon which you see the word "Unbreakable". A hulking man picks up the wood, and snaps it over his knee. The mage frowns, then creates another piece with the words "Super Strong". This time he stops the man from picking it up, and smiles at you.
"Magic, for all its power, has one thing it has never been known to do. While objects touted as unbreakable, weapons described as all-destroying, effects believed to be unstoppable, and powers considered invincible have existed in the past, all have eventually been broken, stopped, or defeated. The only absolute it might be able to create is absolute zero, but that is a different type of absolute to the kind we are speaking of."
He stops and nods, continuing his explanation.
"This may seem obvious to you, but the primary purpose of this law is for you to keep in mind that no matter how strong your abilities may be, you can still be defeated. No matter how sharp your sword, things it cannot cut. No matter how impenetrable your defenses, things that can slip through. Overconfidence will lead to a painful defeat."
His speech concluded, your instructor once more asks for queries.
"Are there any questions?"