Mark Twain seems like a great one to kick things off:
"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great."
From Zig Ziglar: "Remember failure is an event, not a person!"
From Ingvar Kamprad, the founder of IKEA: "Only those who are asleep make no mistakes."
From motivational author, Wayne Dyer: "When you dance, your purpose is not to get to a certain place on the floor. It's to enjoy each step along the way."
From Gandhi: "Live as if you were to die tomorrow. Learn as if you were to live forever."
And one of my very most favorites credited to Vivian Greene, although I have it as anonymous on a kitchen magnet:
"Life's not about waiting for the storms to pass...It's about learning to dance in the rain."
Make it a great Sunday everybody and as always, get off the computer and go hug somebody!