John William Cousin, A Short Biographical Dictionary of English Literature… (1910)
“ S. was, however, rather a brilliant expositor than an original thinker, and in the main followed Reid (q.v.) . His works include Philosophy of the Human Mind, in three vols., pub. respectively in 1792, 1813, and 1827, Outlines of Moral Philosophy (1793) , Philosophical Essays (1810) , Dissertation on the Progress of Metaphysical and Ethical Philosophy (1815, part II. 1821) , and View of the Active and Moral Powers of Man. He also wrote memoirs of Robertson the historian, Adam Smith, and Reid. ”
