The beginning of Gene Roddenberry's forward hit home for me:
"The Starship Enterprise is not a collection of motion picture sets or a model used in visual effects. It is a very real vehicle; one designed for storytelling. You the audience, furnish its propulsion. With a wondrous leap of imagination, you make it into a real spaceship that can take us into the far reaches of the galaxy and sometimes even the depths of the human soul."