In The Firmament of Time––nominated for a National Book Award––Loren Eiseley offers a series of brilliant, provocative excursions through the history of science. A paleontologist with the soul and skill of a poet, he reflects on the many ways in which the quest for knowledge has been shaped by the changing cultures in which it emerged and developed. Examining the role of metaphor in scientific thought, anticipations of scientific discoveries in the works of poets and novelists, and the “unconscious conformity” of scientific theory to prevailing orthodoxies, he argues for the ongoing relevance of dreams, the imagination, and the irrational to scientific progress.