"Don't let yesterday use up too much of today."
(Will Rogers)

"Footfalls echo in the memory Down the passage which we did not take Towards the door we never opened Into the rose-garden."
(Thomas Stearns Eliot, aka T. S. Eliot)

"I do not regret the things I've done, but those I did not do."
(Rory Cochrane)

"I think I don't regret a single 'excess' of my responsive youth--I only regret, in my chilled age, certain occasions and possibilities I didn't embrace."
(Henry James)

"It wouldn't be New Year's if I didn't have regrets."
(William Thomas)

"My one regret in life is that I am not someone else."
(Woody Allen)

"Regret for the things we did can be tempered by time; it is regret for the things we did not do that is inconsolable." (Sydney J. Harris)

"To feel today what one felt yesterday isn't to feel - it's to remember today what was felt yesterday, to be today's living corpse of what yesterday was lived and lost."
(Fernando Pessoa, The Book of Disquiet)

"Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover."
(Mark Twain)