In one work, this man wrote of how impressions are accepted based on the "universe of the imagination." He described "the rule of property" and how justice is an unnatural virtue in that work's section "Of Morals." He defined "moral philosophy" and posited a contradictory example of a "missing shade of blue" that originates outside of human senses in a tome that reworked his earlier A Treatise of 
In one work, this man wrote of how impressions are accepted based on the "universe of the imagination." He described "the rule of property" and how justice is an unnatural virtue in that work's section "Of Morals." He defined "moral philosophy" and posited a contradictory example of a "missing shade of blue" that originates outside of human senses in a tome that reworked his earlier A Treatise of Human Nature. For 10 points, name this Scottish empiricist philosopher who wrote An Enquiry Concerning Human Understanding.
In one work, this man wrote of how impressions are accepted based on the "universe of the imagination."
David Hume