DEAR SIR,--Your favors of the 7th and 16th are received, and I now return you the memoir enclosed in the former. I am much gratified by its communication, because, as the plan appeared in the newspapers soon after the new Secretary of War came into office, we had given him the credit of it. Every line of it is replete with wisdom; and we might lament that our tardy enlistments prevented its execution, were we not to reflect that these proceeded from the happiness of our people at home. It is more a subject of joy that we have so few of the desperate characters which compose modern regular armies. But it proves more forcibly the necessity of obliging every citizen to be a soldier; this was the case with the Greeks and Romans, and must be that of every free State. Where there is no oppression there will be no pauper hirelings. We must train and classify the whole of our male citizens, and make military instruction a regular part of collegiate education. We can never be safe till this is done. I have been persuaded, _ab initio_, that what we are to do in Canada must be done quickly; because our enemy, with a little time, can empty pickpockets upon us faster than we can enlist honest men to oppose them. If we fail in this acquisition, Hull is the cause of it. Pike, in his situation, would have swept their posts to Montreal, because his army would have grown as it went along. I fear the reinforcements arrived at Quebec will be at Montreal before General Dearborne, and if so, the game is up. If the marching of the militia into an enemy's country be once ceded as unconstitutional (which I hope it never will be), then will their force, as now strengthened, bid us permanent defiance. Could we acquire that country, we might perhaps insist successfully at St. Petersburg on retaining all westward of the meridian of Lake Huron, or of Ontario, or of Montreal, according to the pulse of the place, as an indemnification for the past and security for the future. To cut them off from the Indians even west of the Huron would be a great future security. Your kind answer of the 16th, entirely satisfies my doubts as to the employment of a navy, if kept within striking distance of our coast, and shows how erroneous views are apt to be with those who have not all in view. Yet, as I know by experience that profitable suggestions sometimes come from lookers on, they may be usefully tolerated, provided they do not pretend to the right of an answer. They would cost very dear, indeed, were they to occupy the time of a high officer in writing when he should be acting. * * * * * TO MR. MATTHEW CARR. MONTICELLO, June 19, 1813.