Here are a few of my favorites (from books, movies, articles, etc).
"Get busy living or get busy dying." -Andy Dufresne in Shawshank Redemption
"Stop asking God to bless what you're doing. Get involved in what God is doing because it's already blessed." -Bono
"Failure is never quite so frightening as regret." -Sam Neill's character in The Dish
"Courage is being scared to death but saddling up anyway." -John Wayne
"Do or do not. There is no try." -YodaGreat quotes are more than just words. They make a beeline straight to the soul. Naturally, they have the power to shape our thinking and ultimately guide our lives. Of course, this is not news to God. He's filled an entire book with life transforming quotes. His Book is the best quote collection of all.
"I think therefore I am." -Rene Descartes
"Action springs not from thought, but from a readiness for responsibility." -Dietrich Bonhoeffer.
"All sins are species of pride." -John Piper
"It will cost something to walk slow in the parade of the ages, while excited men of time rush about confusing motion with progress. But it will pay in the long run and the true Christian is not much interested in anything short of that." -AW Tozer
Got any favorites?