Here’s an excellent way to show how ruthless a character is. These words are said by one of the craziest characters in the book known as Mad Dog. He is a drug dealer. And he is saying these to his best friend who he is “recruiting” into the “business”. The book is ‘On the Run’ by Izai Amorim.
“It’s not personal. I like you. But business is business. You should know two things. One, I won’t take a bullet for you. Two, I won’t let you fuck up my business.’