Tesla replies in Draconic to Albertus Magnus: And so I did destroy the plans, Master Albertus, so that they could never fall into evil hands... But this does not mean I have forgotten how to build it...or that I will never build one for myself...to be used strictly in self-defense, of course! After all, think how mankind would benefit from my Death Ray now, if it were completed? Mankind’s dragon problem in this Tributary of the River would be easily solved, would it not?