"I'm all for selling books, but when guys are burning my house down, that's where I draw the line"

This quote by Robert Kirkman is a metaphor for the significance of safeguarding one's worths and beliefs. He is saying that while he is open to making money and selling books, he will not compromise his values and beliefs when it comes to defending them. He is drawing the line in the sand and saying that he will not enable anyone to cross it. He is making it clear that he will not endure any kind of attack on his worths and beliefs, no matter how rewarding it may be. This quote is a pointer that we need to all stand up for what we believe in and not let anyone remove our values and beliefs.