As impossible to summarize as it is to shake, Will Eno's one-man monologue Thom Pain offers a contemplation on life's beauty and life's meaninglessness. It's a cry against how little time we have left and an admission that we'll waste it all anyway. It's a tricky goof on the rules governing the relationships between humankind and the universe, childhood and adulthood, audience and performer, and joke and punch line. A plotless, meandering lecture, it piddles profoundly and is funny as hell. The 2005 play might be a masterpiece. Relevance Productions' presentation looked like it cost about $50, but Scott Cox, playing Eno's chatty Everyman, turned in the kind of magnificent work that no theater company can buy.