The moral unity to be expected in different ages is not a unity of standard, or of acts, but a unity of tendency. . . . At one time the benevolent affections embrace merely the family, soon the circle expanding includes first a class, then a nation, then a coalition of nations, then all humanity, and finally, its influence is felt in the dealings of man with the animal world. -W. E. H. LECKY, The History of European Morals
( Peter Singer )
[ The Expanding Circle: Ethics, ]
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