| Quote | Author |
| Your most unhappy customers are your greatest source of learning. | Bill Gates |
| Never be afraid of failure. The only way you can move from being a good leader to a very good one, even an excellent one, is by aiming higher. And that is bound to generate shortfalls. | John Adair |
| I failed my way to success. | Thomas Edison (1847-1931) |
| You don't have to be sick to get better. | Unknown |