With searching eyes that loom large behind impossibly thick bifocals, his voice is a canyon, as lonely and persistent as the river that carved it. Dan Zimmerman, the Dog-Man, the Cosmic Patriot, the Space Pilgrim, is both seer and seeker, an embracer of limitations and a big-hearted mystic. Zimmerman's 2014 offering, Dreams of Earth, is the kind of work that exists only by a half-century spent listening and crafting songs. This kind of time ingrains in a man an understanding of how stories are told, of when to cut to the chase and when to linger on a word or a breath.