Since then the same qualities that produce pride or humility, cause love or hatred; all the arguments that have been employed to prove, that the causes of the former passions excite a pain or pleasure independent of the passion, will be applicable with equal evidence to the causes of the latter.
SECT.

II EXPERIMENTS TO CONFIRM THIS SYSTEM Upon duly weighing these arguments, no one will make any scruple to assent to that condusion I draw from them, concerning the transition along related impressions and ideas, especially as it is a principle, in itself, so easy and natural.

But that we may place this system beyond doubt both with regard to love and hatred, pride and humility, it will be proper to make some new experiments upon all these passions, as well as to recal a few of these observations, which I have formerly touched upon.
In order to make these experiments, let us suppose I am in company with a person, whom I formerly regarded without any sentiments either of friendship or enmity.

Here I have the natural and ultimate object of all these four passions placed before me.

Myself am the proper object of pride or humility; the other person of love or hatred.
Regard now with attention the nature of these passions, and their situation with respect to each other.