This volume brings together the views of authors involved in many aspects of biomedicine-from research on basic biology to clinical invest igation of the causes and treatment of human disease to hospital adminis tration ·to health care planning on the state and Federal levels to Con gressionallegislation covering biomedical research, medical education, the development of medical technology, and the delivery of health care. The purpose is not to present a "party line" representing a consensus of these often divergent viewpoints, and we do not suggest that we have found solutions to the many problems encountered in the interaction of scientists, administrators, legislators, and the recipients of health care. These articles are intended primarily to communicate to both biomedical scientists and intelligent laymen the processes, social and political as well as scientific, whereby biomedical science advances, and the need for biomedical scientists to take an interest and initiative not only in scientific research but also in research on health care delivery and in related public issues before the legislative and administrative branches of government.