From the Inside Flap
When I was a youngster, I read London's BEFORE ADAM and Crump's "Og" books. I've been enthralled ever since by tales of pre-Homo sapiens. NO ENEMY BUT TIME is the best fictional re-creation of these I've come across. It makes a glowing reality of the dry bones of this field. Philip Jose Farmer
Michael Bishop has a unique way of employing his talent in the satirizing of civilization's discontents while steering with a sure hand between the rocks of anarchy and the whirlpool of utopianism. He banks his verbal fires carefully, exercises a poet's control of his imagery, and possesses an admirable sense of the grotesque. I recommend him without reservation. Roger Zelazny
NO ENEMY BUT TIME is a science fiction novel of rare maturity and perhaps even rarer wit. The combination of wit, erudition, serious literary intent, and successful execution that Michael Bishop displays here is rarer still in the genre. Unquestionably a major novel by an unquestionably major writer. Norman Spinrad