Click on the phrases to see them in context. The original texts by Immanuel Kant and David Hume are available from the Gutenberg Projet.

But no proposition can be more evident, than that property is perfectly unintelligible without first supposing justice and injustice; and that these virtues and vices are as unintelligible, unless we have motives, independent of the morality, to impel us to just actions, and deter us from unjust ones.