The difficulty then is, why any objects ever cause pure love or hatred, and produce not always the mixt passions of respect and contempt.
I have supposed all along, that the passions of love and pride, and those of humility and hatred are similar in their sensations, and that the two former are always agreeable, and the two latter painful.
But though this be universally true, it is observable, that the two agreeable, as well as the two painful passions, have some difference, and even contrarieties, which distinguish them.

Nothing invigorates and exalts the mind equally with pride and vanity; though at the same time love or tenderness is rather found to weaken and infeeble it.

The same difference is observable betwixt the uneasy passions.

Anger and hatred bestow a new force on all our thoughts and actions; while humility and shame deject and discourage us.

Of these qualities of the passions, it will be necessary to form a distinct idea.