A good congratulatory quote that is unattributed is: "Congratulations on your success, but remember, success is not final, failure is not fatal; it is the courage to continue that counts." Another is: "It's time for you to live up to your success, smile, and take a bow. Congratulations."
Other popular congratulatory quotes likely to inspire future successes include "With knowledge in your hands and an open heart, you were sure to find success in your efforts. Congratulations," "May this success lead to a greater achievement in the years to come. Congratulations for present and upcoming successes" and "Congratulations, with this success comes greater opportunities and challenges. Face it with the same zeal as you always have."
Some especially meaningful congratulatory quotes by famous individuals are "If the day and the night are such that you greet them with joy, and life emits a fragrance like flowers and sweet-scented herbs, is more elastic, more starry, more immortal ? that is your success. All nature is your congratulation" by Henry David Thoreau, "Congratulations, I knew the record would stand until it was broken" by Yogi Berra and "People who succeed have momentum. The more they succeed, the more they want to succeed, and the more they find a way to succeed" by Tony Robbins.