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.

Source: Brown, H. Jackson. P.S. I Love You. Nashville: Rutledge Hill Press, a Thomas Nelson Company, 1990. Additional Information: This popular quote is commonly misattributed to Mark Twain. However, the first appearance of this quote was in a 1990 book written by bestselling author H. Jackson Brown. Brown's book, P.S. I Love You, contains a collection of memorable sayings from Jackson's mother, and this quote is one of them. In 1998, The New Yorker mistakenly attributed the quote to Mark Twain, and this misattribution has since been reprinted in other publications.