Through the lens of science, Hans Kelsen proposes a dynamic theory of natural law, examines Platonic and Aristotelian doctrines of justice and the idea of justice as found in the holy scriptures. This title is part of UC Press’s Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1957.