The First Law of Thermodynamics (Unabridged) [Unabridged Fiction‪]‬

The Sixties are ending badly. It's the eve of the Kent State shootings, and Space Cowboy is on the prowl for the most powerful drug in the universe - the one that can make him who he is destined to be. A psychedelic romp with a sense of wonder ending.
Author James Patrick Kelly is a two-time winner of the Hugo Award and a 2007 Nebula Award winner. His stories appear frequently in Asimov's Science Fiction, and he writes the magazine's "On the Net" column. Publishers Weekly has called him "a meticulous craftsman in the demanding short-story form".