"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." Although I believe every word of that statement, Mark Twain did NOT say it.
The quote belongs to H. Jackson Brown's mother. See page 13 in Brown's 1991 book: P.S. I Love You: When Mom Wrote, She Always Saved the Best for Last. Thanks to the Huffington Post @huffpost for setting us straight!
Now go. Explore. Dream. Discover!