Feel free to add your own:

“Always read something that will make you look good if you die in the middle of it.” – P.J. O’Rourke

“A writer is, after all, only half his book. The other half is the reader, and from the reader, the writer learns.” – P.L. Travers

“Perfection is an unattainable goal. Just get words down on paper, and when you stumble to what you think is the end of the book, you will have hundreds of pages of words that came out of your head. It may not be perfect, but it looks like a book. ” – Laurell K. Hamilton