What are 'emotions'? This book offers a balanced survey of facts and theory.

The following sheets were, as the note on the opposite page expresses, printed so long ago as the year 1780. The design, in pursuance of which they were written, was not so extensive as that announced by the present title. They had at that time no other destination than that of serving as an introduction to a plan of a penal code in terminus, designed to follow them, in the same volume.