187. X. THE OBLIGATIONS OF CHARITY ARE ALL THINGS THAT A MAN OUGHT TO DO BESIDES THOSE ABOVE MENTIONED. The obligations of charity are, taxes which are imposed upon subjects and citizens, for the various necessities and the various uses of the commonwealth; customs duties; the expenses and outlay for the various needs and uses of a household, which concern one's self, wife, children, menservants, maidservants, and workmen; and their reciprocal obligations. Then, there are some things which become obligations by solemn promise. Besides these there are also civil obligations, which are duties of subordination, of obedience, of honor, and of social interaction, which must be called obligations because a man ought to do them. But to enumerate these in detail would fill pages. Various duties which the laws of the kingdom impose are called obligations of charity, because charity does them from duty and not of its good pleasure; and because charity regards them as uses, it does them sincerely and willingly. With those who are in charity the sincerity and benignity of charity are inwardly present in every duty. But both the sincerity and benignity are according to the uses which they foresee in their duties; and also, as far as they know, according to the economical management of uses.