“I hole up in my own cozy cubicle and write, considering ways to make the approaching Thanksgiving holiday not just another day in this place. In prison, hope faces east; time is measured in wake-ups.”Time of Grace is a remarkable book, written with great eloquence by a former science teacher who was incarcerated for twelve years for his sexual liaison with a teenage student. Far more than a “prison memoir,” it is an intimate and revealing look at relationships—with fellow humans and with the surprising wildlife of the Sonoran Desert, both inside and beyond prison walls. Throughout, Ken Lamberton reflects on human relations as they mimic and defy those of the natural world, whose rhythms calibrate Lamberton’s days and years behind bars. He writes with candor about his life, while observing desert flora and fauna with the insight and enthusiasm of a professional naturalist. While he studies a tarantula digging her way out of the packed earth and observes Mexican freetail bats sailing...