This anthology of philosophical essays, gathered from numerous sources, provides a convenient, in-depth introduction to the Doctrine of Double Effect. A number of important philosophers and intellectual perspectives are represented in what constitutes a debate over the doctrine and the various concerns it raises. Philosophers represented in these readings include Joseph M. Boyle, Jr., Warren Quinn, G. E. M. Anscombe, Thomas Nagel, Phillippa Foot, Jonathan Bennett, Nancy Davis, Donald Marquis, and many others.

The Doctrine of Double Effect is a principle of reasoning well known to moral philosophers. The standard formulation of the doctrine states that it is "licit to posit a cause which is either good or indifferent from which there follows a twofold effect, one good, the other evil, if a proportionally grave reason is present, and if the end of the agent is honorable."