be sufficient

References in classic literature ?
Now it is not residence which constitutes a man a citizen; for in this sojourners and slaves are upon an equality with him; nor will it be sufficient for this purpose, that you have the privilege of the laws, and may plead or be impleaded, for this all those of different nations, between whom there is a mutual agreement for that purpose, are allowed; although it very often happens, that sojourners have not a perfect right therein without the protection of a patron, to whom they are obliged to apply, which shows that their share in the community is incomplete.
But our former description of a citizen will admit of correction; for in some governments the office of a juryman and a member of the general assembly is not an indeterminate one; but there are particular persons appointed for these purposes, some or all of the citizens being appointed jurymen or members of the general assembly, and this either for all causes and all public business whatsoever, or else for some particular one: and this may be sufficient to show what a citizen is; for he who has a right to a share in the judicial and executive part of government in any city, him we call a citizen of that place; and a city, in one word, is a collective body of such persons sufficient in themselves to all the purposes of life.
It will be sufficient to remark, first, that for the reasons elsewhere assigned, it is less likely that any decided partiality should prevail in the councils of the Union than in those of any of its members.
It's clear that prevention will never be sufficient.