A major contemporary figure in epidemiology, Dr. Mervyn Susser here addresses many of the broader concerns of the field, such as the logic of judgment about relations between presumed causes and effects, and the social context of epidemiological studies and of health in general. This collection of 28 papers is divided into six sections, each preceded by an introduction which demonstrates their web of common themes. Epidemiologists, public health practitioners, and sociologists find much of value in this carefully selected presentation, which draws on the author's wide knowledge and experience.