Ah, the power of the inspirational quote. A great inspirational quote can stimulate images and feelings in people's brains that drive them to power through, power up and go the distance. It's the power of positive imagery, like a little cheerleader in your head, building confidence and belief in your work. People can imagine themselves behaving in the way described in the quote, inspiring them by association. Sure, there are more active ways to motivate your employees; with team building activities, workshops, balanced praise and critique, etc. But, instilling in them some advice from the greats is a simple place to start, and can reap huge rewards.