Liber de misericordia et justitia

work by Alger of Liège

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June 30, 2026

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The Liber de misericordia et justitia (c. 1105), meaning "On Mercy and Justice," is a significant work by Alger of Liège, a Flemish priest and scholar. This book is a collection of biblical and patristic extracts, accompanied by Alger's commentary. It is considered an important resource for understanding the history of church law and discipline.12

Alger used this work to apply the criteria developed by Ivo of Chartres for reconciling conflicting legal texts, particularly concerning the efficacy of sacraments administered by individuals deemed heretical or guilty of simony. The book's title reflects its focus on the interplay between mercy and justice within the framework of canon law.12

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Alger Of Liège
…important of those remaining are Liber de misericordia et justitia (“On Mercy and Justice”), a collection of biblical and patristic extracts with a commentary—an important work for the history of church law and discipline; De sacramentis corporis et sanguinis Dominici (“Concerning the Sacraments of the Body and the Blood of…
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…important of those remaining are Liber de misericordia et justitia (“On Mercy and Justice”), a collection of biblical and patristic extracts with a commentary—an important work for the history of church law and discipline; De sacramentis corporis et sanguinis Dominici (“Concerning the Sacraments of the Body and the Blood of…
Read More