We ask you, urgently: don't scroll past this
Dear readers, Catholic Online was de-platformed by Shopify for our pro-life beliefs. They shut down our Catholic Online, Catholic Online School, Prayer Candles, and Catholic Online Learning Resources essential faith tools serving over 1.4 million students and millions of families worldwide. Our founders, now in their 70's, just gave their entire life savings to protect this mission. But fewer than 2% of readers donate. If everyone gave just $5, the cost of a coffee, we could rebuild stronger and keep Catholic education free for all. Stand with us in faith. Thank you.Help Now >
Accomplice
FREE Catholic Classes
A term generally employed to designate a partner in some form of evildoing. An accomplice is one who cooperates in some way in the wrongful activity of another who is accounted the principal. From the viewpoint of the moral theologian not every such species of association is straightway to be adjudged unlawful. It is necessary to distinguish first of all between formal and material cooperation. To formally cooperate in the sin of another is to be associated with him in the performance of a bad deed in so far forth as it is bad, that is, to share in the perverse frame of mind of that other. On the contrary, to materially cooperate in another's crime is to participate in the action so far as its physical entity is concerned, but not in so far as it is motived by the malice of the principal in the case. For example, to persuade another to absent himself without reason from Mass on Sunday would be an instance of formal cooperation. To sell a person in an ordinary business transaction a revolver which he presently uses to kill himself is a case of material cooperation. Then it must be borne in mind that the cooperation may be described as proximate or remote in proportion to the closeness of relation between the action of the principal and that of his helper. The teaching with regard to this subject-matter is very plain, and may be stated in this wise: Formal cooperation is never lawful, since it presupposes a manifestly sinful attitude on the part of the will of the accomplice. Material complicity is held to be justified when it is brought about by an action which is in itself either morally good or at any rate indifferent, and when there is a sufficient reason for permitting on the part of another the sin which is a consequence of the action. The reason for this assertion is patent; for the action of the accomplice is assumed to be unexceptionable, his intention is already bespoken to be proper, and he cannot be burdened with the sin of the principal agent, since there is supposed to be a commensurately weighty reason for not preventing it. Practically, however, it is often difficult to apply these principles, because it is hard to determine whether the cooperation is formal or only material, and also whether the reason alleged for a case of material cooperation bears due proportion to the grievousness of the sin committed by the principal, and the intimacy of the association with him. It is especially the last-named factor which is a fruitful source of perplexity. In general, however, the following considerations will be of value in discerning whether in an instance of material cooperation the reason avowed is valid or not. The necessity for a more and more powerful reason is accentuated in proportion as there is
- a greater likelihood that the sin would not be committed without the act of material cooperation;
- a closer relationship between the two; and
- a greater heinousness in the sin, especially in regard to harm done either to the common weal or some unoffending third party.
Join the Movement
When you sign up below, you don't just join an email list - you're joining an entire movement for Free world class Catholic education.

-
- Stations of the Cross
- Easter / Lent
- 5 Lenten Prayers
- Ash Wednesday
- Living Lent
- 7 Morning Prayers
- Mysteries of the Rosary
- Litany of the Bl. Virgin Mary
- Popular Saints
- Popular Prayers
- Female Saints
- Saint Feast Days by Month
- Pray the Rosary

Massive Egg Recall Highlights the Dangers of Centralized Food Systems: Why We Need Local Solutions

Pope Francis Advances Five Causes for Sainthood

Finding Strength in Faith During Job Market Uncertainty
Daily Catholic
Daily Readings for Tuesday, April 01, 2025
St. Hugh of Grenoble: Saint of the Day for Tuesday, April 01, 2025
Prayer for God's Help in Daily Actions: Prayer of the Day for Friday, March 14, 2025
Daily Readings for Monday, March 31, 2025
St. Benjamin: Saint of the Day for Monday, March 31, 2025
- To Perceive Animals as God's Gifts: Prayer of the Day for Thursday, March 13, 2025
Copyright 2025 Catholic Online. All materials contained on this site, whether written, audible or visual are the exclusive property of Catholic Online and are protected under U.S. and International copyright laws, © Copyright 2025 Catholic Online. Any unauthorized use, without prior written consent of Catholic Online is strictly forbidden and prohibited.
Catholic Online is a Project of Your Catholic Voice Foundation, a Not-for-Profit Corporation. Your Catholic Voice Foundation has been granted a recognition of tax exemption under Section 501(c)(3) of the Internal Revenue Code. Federal Tax Identification Number: 81-0596847. Your gift is tax-deductible as allowed by law.