Psychology: the Motive Powers

In this rigorous 19th-century treatise, James McCosh turns his attention to the driving forces of human nature what he calls the 'motive powers' that compel us toward action, judgment, and moral choice. Departing from Kant's famous division of the mind into cognition, feeling, and will, McCosh proposes a more expansive framework that elevates conscience to its proper place as a fundamental faculty. For McCosh, the motive powers are not mere appendages to rational thought; they are the engines of moral agency, the sources of our deepest commitments and highest aspirations. He organizes his analysis around three pillars: the emotions, the will, and critically, the moral faculty or conscience which he argues possesses a unique dual nature as both knowing and moving, making it in some sense supreme among our mental powers. Written with the systematic precision of Victorian scholarship yet animated by genuine philosophical passion, this work offers readers a window into how educated minds once conceived of the struggle between reason and appetite, duty and desire. It remains essential reading for anyone interested in the intellectual history of psychology and moral philosophy.