If I Were to Write a Textbook

Most physics textbooks have titles like Physics, University Physics, College Physics, Physics for Scientists and Engineers, and Fundamentals of Physics.

If I ever write a text, it would definitely have to have a much cooler title.  Maybe something like:

 Letters of Priest 

on Different Subjects 

in Physics and Philosophy 

Addressed to a German Princess

Damn!  Wouldn't you know it; that title has already been used.