Words and Birds
This is a very simple concept; to communicate, we need words, and to bridge the void between ideas and action, we need words. In a way, words bridge the worlds of 'where anything is always possible', and the world of 'this, only this, is happening now'. Both of these, if integrated well, can turn our worlds into the ones we dream of. The world shapes our dreams, just as our dreams shape the world, through words.
(Note from the future: In a way, words are the first cultural art; a way to bridge our minds and create something shared)