T 3.2.10.11

To confirm this we may weigh the following phænomena, which are pretty curious in their kind. In elective monarchies the right of succession has no place by the laws and settled custom; and yet its influence is so natural, that 'tis impossible |entirely to exclude it from the imagination, and render the subjects indifferent to the son of their deceas'd monarch. Hence in some governments of this kind, the choice commonly falls on one or other of the royal family; and in some governments they are all excluded. Those contrary phænomena proceed from the same principle. Where the royal family is excluded, 'tis from a refinement in politics, which makes people sensible of their propensity to chuse a sovereign in that family, and gives them a jealousy of their liberty, lest their new monarch, aided by this propensity, shou'd establish his family, and destroy the freedom of elections for the future.