None but those who have learned the art of subjecting their...

None but those who have learned the art of subjecting their senses as well as reason to hypothetical systems can be persuaded by the most specious rhetorician that the lots of life are equal; yet it cannot be denied that every one has his peculiar pleasures and vexations, that external accidents operate variously upon different minds, and that no man can exactly judge from his own sensations what another would feel in the same circumstances.