Philosophy Word of the Day – Principle of Double Effect

Thomas Aquinas.
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The principle of double effect . . . is a set of ethical criteria for evaluating the permissibility of acting when one’s otherwise legitimate act (for example, relieving a terminally ill patient’s pain) will also cause an effect one would normally be obliged to avoid (for example, the patient’s death.)

Double-effect originates in the thought of Thomas Aquinas (in his treatment of homicidal self-defense found in his Summa Theologiae, IIa-IIae Q. 64, art. 7).

This set of criteria states that an action having foreseen harmful effects practically inseparable from the good effect is justifiable if upon satisfaction of the following:

  • the nature of the act is itself good, or at least morally neutral;
  • the agent intends the good effect and not the bad either as a means to the good or as an end itself;
  • the good effect outweighs the bad effect in circumstances sufficiently grave to justify causing the bad effect and the agent exercises due diligence to minimize the harm.

Via Wikipedia

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One thought on “Philosophy Word of the Day – Principle of Double Effect

  1. Pingback: Philosophy Word of the Week – Principle of Double Effect | DanielSpratlin.com

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