I don't get how the statement "Never hurt anybody in Life" has anything to do with the rest of it. I think the back half makes sense, toleration due to valuing someone, but I don't understand why that would be a reason to never hurt anyone. A better start might be, When you hurt someone in life (because we all will, and life really shouldn't be capitalized) and that someone keeps on tolerating you...

That capital L threw me on 'life'

Or he can't afford to get rid of you. One or the other.

Good lesson, it just needs some polishing to be truly quote-worthy.