|"Is this all real? Or has this been happening inside my head?"
The subject of this article is a real-life person, company, product, or creative work that has been mentioned "in-universe" in a canon source. The Harry Potter Wiki is written from the perspective that all information presented in canon is true (e.g., Hogwarts really exists), and, as such, details contained in this article may differ from real world facts.
Albert Einstein was a German-born theoretical physicist, well known for his development of the general theory of relativity. The back cover blurb for A Brief History of Time called its author Stephen Hawking the most brilliant theoretical physicist since Einstein.
- Harry Potter and the Prisoner of Azkaban (film) (Mentioned only)