Amo was the first known African-born philosopher to earn a doctorate and hold a university lectureship in early modern Europe. His 1734 dissertation "On the Impassivity of the Human Mind" attacked Descartes' claim that mind and body causally interact, arguing that sensation belongs to the living body alone while the mind's operations remain distinct and untouched, and his lost disputation on the legal standing of Africans in Europe directly challenged the juridical basis of enslavement.
Intellectual setting
Amo worked within the German university system of the early Enlightenment, engaging Cartesian and Wolffian philosophy at Halle and Wittenberg while signing his published work "Amo, an African" as rising racial prejudice in the 1740s eventually made his position in Germany untenable.
Key ideas
The impassivity of the mind
Amo argued against Cartesian interactionism, holding that because the mind is a purely thinking, immaterial substance it cannot literally receive sensations from the body; sensing and feeling belong to the organic body, not to the mind that perceives their effects.
The juridical status of Africans in Europe
In a now-lost 1729 disputation, "The Rights of Moors in Europe," Amo examined the legal status of Africans under Roman and European law, challenging arguments used to justify their enslavement and servitude.
Legacy
Amo is recognized as a founding figure in the history of Black European intellectual life and a reference point for Africana philosophy's engagement with the European Enlightenment; his critique of Cartesian dualism anticipated later materialist objections to mind-body interactionism.