Unquestioned Duty
Before contracts and signed agreements, the only thing there was, was a person's loyalty and trust. In Medieval times it was important for a man to understand his duty and relationship to God as well as to his earthly king. We are able to see such characterization of this bond with the title character in The Song of Roland and with Macduff in Shakespeare's Macbeth. Roland and Macduff both seem to be the essence of loyalty, even though this devotion leads them down two very different paths.
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