The act of willingly subtracting from one's own limited...

The act of willingly subtracting from one's own limited store of the good and the agreeable for the sake of adding to that of others reflects the understanding that individual happiness needs a base broader than the mere satisfaction of selfish passions. From there, it is not such a large step to the realization that respecting the susceptibilities and rights of others is as important as defending one's own susceptibilities and rights if civilized society is to be safeguarded.