The division of governments into departments, and the division, again, of the legislative department into two chambers, are essential provisions in our system. This last, although not new in itself, yet seems to be new in its application to governments wholly popular. The Grecian republics, it is plain, knew nothing of it; and in Rome, the check and balance of legislative power, such as it was, lay between the people and the senate. Indeed, few things are more difficult than to ascertain accurately the true nature and construction of the Roman commonwealth. The relative power of the senate and the people, of the consuls and the tribunes, appears not to have been at all times the same, nor at any time accurately defined or strictly observed. Cicero, indeed, describes to us an admirable arrangement of political power, and a balance of the constitution, in that beautiful passage in which he compares the democracies of Greece with the Roman commonwealth. But at what time this wise system existed in this perfection at Rome, no proofs remain to show. Her constitution, originally framed for a monarchy, never seemed to be adjusted in its several parts after the expulsion of the kings. Liberty there was, but it was a disputatious, an uncertain, an ill-secured liberty. The patrician and plebeian orders, instead of being matched and joined, each in its just place and proportion, to sustain the fabric of the state, were rather like hostile powers, in perpetual conflict. With us, an attempt has been made, and so far not without success, to divide representation into chambers, and, by difference of age, character, qualification, or mode of election, to establish salutary checks, in governments altogether elective. [Sidenote: Education in New England.]