to his own interest to moderate his actions in obedience to the popular will; otherwise he runs a risk of exciting his subjects to rebellion. His own prudence is thus the principal check on his conduct.
Aquinas however only allows the title of king, in the strict sense of the word, to those who hold an absolute government, not in deference to the laws but according to virtue. It is John of Salisbury's notion in another shape. He placed the king in a position external to law, because his acts were to be guided by the principles of eternal right; Aquinas substitutes the word 'virtue,' but the idea is the same: neither discusses the possibility of the two forces, of the law and the royal authority, coming into collision; or more accurately, they have already provided for the contingency by a definition of kingship which such conflict ipso facto changes into tyranny. The king, in Aquinas' view, has to supplement the deficiencies of law by following the rule, or unwritten law, of his own will and his own reason. In opposition to this kingship which may be broadly distinguished in modern phrase as the theoretical imperial conception, Thomas places the improper, what he terms the Lacedemonian, order. Such a king, he says, is bound to reign according to the laws and therefore is not lord over all. On the other hand the less absolute he is, the more likely is his government to last, because there is the less chance of his stirring up illwill among his subjects. Yet even here we have to qualify the statement according to special circumstances. For instance, in an advanced state of general civilisation, there is always a certain number of citizens possessing the governing spirit, who may therefore be expected to dispute the prince's authority, however much it be limited by prescription; whereas in a ruder state of society an absolute monarch has the better expectation of the permanent enjoyment of power, because there, the moral standard being in the average so low, it is easier for one man to stand out among his fellows with the special qualifications of kingship.