I have many regrets, and Im sure everyone does. The stupid things you do, you regret if you have any sense, and if you dont regret them, maybe youre stupid. – Katharine Hepburn
When one door closes, another opens; but we often look so long and so regretfully upon the closed door that we do not see the one which has opened for us. – Alexander Graham Bell
Michael Palin decided to give up on his considerable comedy talents to make those dreadfully tedious travel shows. Have you ever tried to watch one? – John Cleese
The hoary joke in the literary world, based on Dreams From My Father, was that if things had worked out differently for Barack Obama, he could have made it as a writer. – James Fallows