Full Idea
Something apprehended to be good and appropriate in any and every circumstance that could be thought of would compel us to will it.
Gist of Idea
If we saw something as totally and utterly good, we would be compelled to will it
Source
Thomas Aquinas (Quaestiones Disputatae de Malo [1271], Q6.reply)
Book Reference
Aquinas,Thomas: 'Selected Philosophical Writings', ed/tr. McDermott,Timothy [OUP 1993], p.179