That the legislative, executive, and judicial departments of the Commonwealth should be separate and distinct; and that the members thereof may be restrained from oppression, by feeling and participating the burthens of the people, they should, at fixed periods, be reduced to a private station, return into that body from which they were originally taken, and the vacancies be supplied by regular elections, in which all or any part of the former members shall be again eligible, or ineligible, as the laws may direct.