Upon the whole, pride is connected with humility, love with hatred, by their objects or ideas: Pride with love, humility with hatred, by their sensations or impressions.
I say then, that nothing can produce any of these passions without bearing it a double relation, viz, of ideas to the object of the passion, and of sensation to the passion itself.

This we must prove by our experiments.

First Experiment.

To proceed with the greater order in these experiments, let us first suppose, that being placed in the situation above-mentioned, viz, in company with some other person, there is an object presented, that has no relation either of impressions or ideas to any of these passions.

Thus suppose we regard together an ordinary stone, or other common object, belonging to neither of us, and causing of itself no emotion, or independent pain and pleasure: It is evident such an object will produce none of these four passions.