I think the only boundaries are individual and personal. A writer should be free to write about anything he or she wants to, including the twin towers. I have made small references to 9/11 in my past two books. ↗
He who wants to persuade should put his trust not in the right argument, but in the right word. The power of sound has always been greater than the power of sense. ↗
Oh, that character was light years away from me. I'm not debonair. I'm not suave. I did wear tight pants, though, because I found out that it worked. ↗