The basis of the theocratic constitution of this commonwealth was the provision by which the exercise of the franchise was made an incident of church-membership. Unless a man could take part in the Lord's Supper, as administered in the churches of the colony, he could not vote or hold office. Church and state, parish and town, were thus virtually identified. Here, as in some other aspects of early New England, one is reminded of the ancient Greek cities, where the freeman who could vote in the market-place or serve his turn as magistrate was the man qualified to perform sacrifices to the tutelar deities of the tribe; other men might dwell in the city but had no share in making or executing its laws. The limitation of civil rights by religious tests is indeed one of those common inheritances from the old Aryan world that we find again and again cropping out, even down to the exclusion of Catholics from the House of Commons from 1562 to 1829. The obvious purpose of this policy in England was self-protection; and in like manner the restriction of the suffrage in Massachusetts was designed to protect the colony against aggressive episcopacy and to maintain unimpaired the uniformity of purpose which had brought the settlers across the ocean. Under the circumstances there was something to be said in behalf of such a measure of self-protection, and the principle required but slight extension to cover such cases as the banishment of Roger Williams and the Antinomians. There was another side to the case, however. From the very outset this exclusive policy was in some ways a source of weakness to Massachusetts, though we have seen that the indirect effect was to diversify and enrich the political life of New England as a whole. [Sidenote: Restriction of the suffrage to church members]