In 1750 he returned to the University of Aberdeen to lecture in moral philosophy, becoming a professor in 1752, based at Marischal College.
From 1760 to 1769 he was minister of Greyfriars Church in Aberdeen and in 1769 was elected Professor of Divinity at Marischal College, moving in 1771 to King's College.[2] As a professor he introduced various reforms. During this time he was also one of the ministers of the city, serving at Greyfriars Church.[3][4] He was a member of the Aberdeen Philosophical Society, founded by John Gregory and including members such as Prof Thomas Gordon.[5]
He died on 22 January 1795. He is buried in the churchyard of St Machar's Cathedral in Old Aberdeen. The grave lies near the south east corner of the eastern cathedral enclosure.
Publications
In 1756 he gained the prize for an Essay on Taste which, together with an Essay on Genius, he subsequently published. These treatises, though now superseded, gained for him considerable reputation.[3]
Compendious View of the Evidences of Natural and Revealed Religion the joint work by Alexander Gerard and his son Gilbert Gerard, published 1828.[6]