Recently my editor admonished me for beginning sentences with And or But.
I've heard that before.
I believe that it's import to learn proper grammar, etc, just as it's important for a painter to learn the rules of painting before expressing his or her Inner Soul, but if they had stuck to the rules, we'd have no Van Goghs or Picassos, like them or not.
After Joyce, Fowles and some others, it came to me that the novelist can write any damned thing he/she wants to. The editor may not like it, the publisher may not publish it and the reader may ignore it, but the novelist has a right to write it.
For proper expression, I feel the rules can—and sometimes should—be bent or even broken, to best express what the writer is trying to get across.
If you think I'm all wrong, start kicking me. Just no steel-toed boots, please.