Cassiodorus—famed throughout history as one of the great Christian exegetes of antiquity—spent most of his life as a high-ranking public official under the

A revealing study of the Variae of Cassiodorus and the insight that the epistolary collection can provide into sixth-century Italy.

The unfinished sci-fi masterpiece by the author of Stranger in a Strange Land—completed by the Hugo Award–winning author of The Stardance Trilogy. Joel John

This book was first published in 2007. Variable stars are those that change brightness. Their variability may be due to geometric processes such as rotation, or