The sum of duty according to Hinduism: Let no man do to another what would be repugnant to himself; cherish no malice, smite not him who smites you, conquer anger with mercy, and vanquish hate by benevolence. 
The work of the Thought Adjuster constitutes the explanation of the translation of man’s primitive and evolutionary sense of duty into that higher and more certain faith in the eternal realities of revelation.  An inspired soul is that faithfully discharging the commonplace duties of routine mortal existence.  The satisfying joy of high duty is the eclipsing emotion of spiritual beings. 
Many peoples have failed in the recognition of high and holy obligations of a divine nature while giving meticulous attention to things of trifling importance.  Sorrow cannot exist in the face of the consciousness of divine duty faithfully performed.  It is folly of running away from duty for far-off enticements.  For ancient ghost believers duty was those things which must be done to keep the spirits favourably disposed, at least neutral.  We have been shown the way and now we must go forth to do our duty and be not weary in well doing.  The idea of duty signifies that you are servant-minded and hence are missing the mighty thrill of doing your service as a friend and for a friend.  In morontia worlds, time no longer available to circumvent disagreeable obligations.  Man’s understanding of duty is only relatively true. 
We can rise above the lowly paths of toil and in human faithfulness performance of the duties of earthly tasks by discerning the lights of eternal life.  Promises should be kept.  If any man wants to follow Jesus must take up responsibilities daily and follow him. 
The sense of evolutionary duty and the obligations consequent upon the illumination of revelation make such a profound impression upon man’s moral nature that he finally reaches that position of mind and that attitude of soul where he concludes that he has no right not to believe in God. 
Believers in the heavenly kingdom have a threefold sacred duty: to man, to God, and service to the brotherhood of God-knowing believers, to preach the gospel.  Bringing children into the world is the supreme responsibility of human existence.  The Lord require of us to deal justly, love mercy, and walk humbly with God.  The whole duty of man resides in fear God and keep his commandments.  Highest duty is to one’s family.  We have to live up to responsibilities with energy and enthusiasm.  The universal duty is the recognition of progressive obligation to the Supreme.  We should avail ourselves of advantages so freely provided for survival.  Man’s whole duty is summed up in this one commandment: Love the Lord your God with all your mind and soul and your neighbor as yourself.