from Part I - Law and ‘Duty’
Published online by Cambridge University Press: 18 July 2025
The concept of a ‘formula’ (Formel) plays an important, if complicated, role in Kant’s ethics, especially in the Groundwork. The concept of a formula also plays an important role in Stoic accounts of moral reasoning in the Latin sources, Cicero and Seneca. This chapter explores the place and function of this concept in Stoic ethics and its origins in Roman legal theory and practice. It then raises the question of the relationship between the Kantian and Stoic uses of the concept, asking whether this is a case of direct influence of Stoicism on Kant’s moral philosophy. The chapter comes to no definite conclusion on the question, but aims to provide comparative materials that may help others to address the question.
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