Twenty years from now you will be more disappointed by the things you didn't do than by the ones you did. So throw off the bowlines, Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.
This quote has been attributed to Mark Twain, but the attribution cannot be verified. The quote should not be regarded as authentic.
Slightly paraphrased version:
I believe the following was from Samuel Clemens “20 years from now you will regret the things you did not do more than the things you did do. So cast of the bowlines, set sail from the safe harbor, let the trade winds catch your sails. Dream, discover, explore.”
http://neuro-www.mgh.harvard.edu/forum_ ... .Hard.html