The merits of Hobbes appear most clearly when he is contrasted with earlier political theorists. He is completely free from superstition; he does not argue from what happened to Adam and Eve at the time of the Fall. He is clear and logical; his ethics, right or wrong, is completely intelligible, and does not involve the use of any dubious concepts. Apart from Machiavelli, who is much more limited, he is the first really modern writer on political theory.