'Don't be stupid. Do I look like I run a bookshop?'
'I really wuldn't know that, sir. Appearances can be very deceptive. For example, I am a fireman. However, upon meeting me socially, people unaware of my occupation often suppose that I am, in fact, a chartered accountant or company director. Imagine me out of uniform, sir, and what kind of man would you see before you. Honestly?'
'A prat,' said Crowley and he ran into the bookshop. (GO)