Comparison and Contrast: Marble Statue of a Youthful Hercules and Power Figure: Male (Nkisi). Both of these pieces can be seen at the Metropolitan Museum of Art in New York. This is my thesis: A comparison and contrast of the Marble Statue of a Youthful Hercules and Power Figure: Male (Nkisi) reveals that both pieces depict power and strength but that the Roman culture represented a warrior tradition and had an artistic influence of Greece that had an affinity for Mythical Gods whereas African culture supported spiritual traditions. You can revised the thesis.