The New Yorker Magazine is seeking to verify the source of this
quote.  Their deadline is today!  Does anyone know if it is or isn't
it Twain?

"Twenty years from now, you will be more disappointed by the things
you didn't do than by the one's you did do.  So throw off the bowlines.
Sail away from the safe harbour.  Catch the trade winds in your sails.
Explore. Dream. Discover."

Thanks,
Barb