Here are a couple more...I am a quotaholic! Mare, yours were good!
“I put all my genius into my life; I put only my talent into my works.” - Oscar Wilde
“Write without pay until somebody offers to pay” - Mark Twain
“Be yourself. Above all, let who you are, what you are, what you believe, shine through every sentence you write, every piece you finish.” - John Jakes
“Writing is making sense of life. You work your whole life and perhaps you've made sense of one small area.” - Nadine Gordimer
“Write to be understood, speak to be heard, read to grow...” - Lawrence Clark Powell
“Writing a book is an adventure. To begin with, it is a toy and an amusement; then it becomes a mistress, and then it becomes a master, and then a tyrant. The last phase is that just as you are about to be reconciled to your servitude, you kill the monster, and fling him out to the public.” - Winston Churchill
“Writing is one of the few professions in which you can psychoanalyse yourself, get rid of hostilities and frustrations in public, and get paid for it” - Octavia Butler
"Every writer I know has trouble writing" - Joseph Heller
“I don't like to write, but I love to have written” - Michael Kanin