"Suppose," Clifford Geertz suggests, "having entangled yourself every now and again over four decades or so in the goings-on in two provincial towns, one a Southeast Asian bend in the road, one a North African outpost and passage point, you wished to say something about how those goings-on had changed." A narrative presents itself, a tour of indices and trends, perhaps a memoir? None, however, will suffice, because in forty years more has changed than those two towns--the anthropologist, for instance, anthropology itself, even the intellectual and moral world in which the discipline...

Rarely has a scholar attained such popular acclaim merely by doing what he does best and enjoys most. But such is Stephen Jay Gould's command of paleontology and evolutionary theory, and his gift for brilliant explication, that he has brought dust and dead bones to life, and developed an immense following for the seeming arcana of this field.

In Time's Arrow, Time's Cycle his subject is nothing less than geology's signal contribution to human thought--the discovery of "deep time," the vastness of earth's history, a history so ancient that we can comprehend it only as metaphor....