"Those who say it cannot be done should not interrupt the person doing it." - Chinese proverb

"What would you attempt to do if you knew you could not fail?" - Unknown

"Try not. Do or do not" - Yoda

"I will never forget that the only reason I'm standing here today is because somebody, somewhere stood up for me when it was risky. Stood up when it was hard. Stood up when it wasn't popular. And because that somebody stood up, a few more stood up. And then a few thousand stood up. And then a few million stood up. And standing up, with courage and clear purpose, they somehow managed to change the world." - Barack Obama