I learned this at least by my experiment: that if one advances confidently in the direction of his dreams, and endeavors to live that life which he has imagined, he will meet with a success unexpected in common hours. He will put some things behind, will pass an invisible boundary; new, universal, and more liberal laws will begin to establish themselves around and within him. If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them.
—HENRY THOREAU, WALDEN