Ethics and performance are two essential reference points for human life. Generally speaking, the relationship between ethics and economics has undergone many vicissitudes over the ages. The philosophers of Greek antiquity and the theologians of the Middle Ages saw economics and morality as inseparable, while the mercantilists saw economics as separate from all moral and religious considerations. From the Industrial Revolution onwards, the opposition initiated by the mercantilists was subsequently exacerbated by the liberals. One thing leading to another, economic performance went from being a means to happiness to an end in itself.It’s only in recent decades that the Manichean vision of the economy has begun to fade. As a result of repeated scandals, recurring crises and the negative impact of economic life on society and the environment, we are witnessing a return of ethics to economic and managerial theory.