The Quaker influences in his art however CAN be see in his most famous work, Peaceable Kingdom painted about 1834. In it he depicts not one but TWO peacable kingdoms. In the foreground an idealized menagerie of predatory animals coexisting, indeed, POSING, with cattle, lambs, children and other more passive beasts. It would appear that some of them he was only passively familiar with. In any case, the scene is based upon Isaiah 11:6 which foretells of a coming peace on earth wherein "The wolf shall dwell with the lamb, and the leopard shall lie down the the kid..."
The second peacable kingdom is a much more earthly one, based upon Benjamin West's painting, Penn's Rreaty with the Indians. Placed off to the left in the composition, in a distant middle ground, the comparison between the two "kingdoms" is hardly subtle. A great admirer of Penn, Hicks saw in him one who tried to bring about the fulfillment of Isaiah's prophecy. Interestingly enough, Hicks, for all his idealism, was not above perhaps making a tidy living from his art. Of this one work, the exact number of variations he painted is unknown, but SIXTY are known to survive.