Duty (n.) is a thing for whom fear is not one of its lasting teachers.
Duty (n.) makes good men prefer to undergo every sort of pain rather than be false to any portion of it.
Duty (n.) is where all the honor of life lives, and its neglect is where all the shame lives.
Duty (n.) leaves no corner of life unclaimed — public or private, abroad or at home, alone or among others.
Duty (n.) is arithmetic: we should be good calculators of it, adding and subtracting to find the remainder and so know how much is due to each person.
Duty (n.) does not follow the degrees of kinship: you would help a neighbor rather than a brother with his harvest, but appear in court for your kinsman rather than your neighbor.
Duty (n.) is almost fully defined by this: free every purpose from rashness and negligence, and do nothing for which no approvable reason can be given.