A long and affectionate letter from Susan informed him of her marriage to David H. Bishop, a man of fine character, and engaged in the profession of an educator, on December 26, 1839. Mr. Stevens at once wrote to his new relative welcoming him in his hearty and warm-hearted manner, and a friendly correspondence ensued between them, which developed into a long and well-maintained political discussion, for Mr. Bishop was a Whig, while Stevens was an uncompromising Democrat, of Free-soil convictions,—“loco-foco Abolitionist,” as he defines himself.

In April the fostering and indulgent grandmother, the widow of the Revolutionary soldier, Jonathan, died at an advanced age, attended during her last illness by Sarah. Mary, early in the year, visited aunt McFarland in Belfast, Maine. Elizabeth was in Lowell, and later also went to aunt McFarland, and only Sarah and Oliver remained at home this year.

His father’s letters reveal how much he was coming to lean upon the self-reliant young man, and to feel the need of his support and affection. “I was glad to hear you say in your last letter that in matters relating to yourself you should be guided by your own judgment,” he writes. In every letter he urges him to come home, if only for a short visit.

Dear Son,—In your letter to Oliver you mention not coming home until Thanksgiving. I hope it will be convenient for you to come home and spend a few days in the summer. Your visit in March was very short, but short as it was, it was better than none. I learn from you that you are far from being satisfied with your present attainments. Why should young men talk of having finished their education when in fact they have only commenced it, considering how much more they might learn if they would only press forward! May all you learn be sound and durable; one rotten piece of timber may wreck a ship. Do not study too hard. My days of anticipating worldly happiness are over (not so fast), I do anticipate seeing my children useful and happy.

Your father,
Isaac Stevens.

Lieutenant Stevens was promoted first lieutenant, corps of engineers, July 1, 1840.

His active and thoroughgoing mind, looking beyond the duties assigned him, saw the necessity of other works to complete the defenses at Newport. He wrote urgent letters to the Engineer Department in Washington, representing the need of a thorough survey of the harbor and the surrounding ground, and especially of the fortifying of Rose Island, which, situated in mid-channel between Rhode Island and Conanicut, and three miles north of, or inside Fort Adams, would supplement and support that work, and render the main entrance of Narragansett Bay impregnable to a hostile fleet. He was ambitious to plan and carry out the fortification of this point, but his recommendations were disregarded, and he was informed that his views, though sound, were premature. Of late years the importance of fortifying Rose Island has been recognized, and the government has erected a powerful battery there.

During the spring and summer his long-cherished idea of becoming a lawyer took more definite shape in his mind, as will be seen from the following letter to his uncle William, August 5, 1840:—

My dear Uncle,—You recollect that when last in Andover I was revolving in my mind the expediency of studying law, with a view of making it my permanent profession. Entering the West Point Academy with no idea of remaining in the army, my present occupation cannot be regarded as one that I have voluntarily and after mature reflection selected, but as one which circumstances and good luck have forced upon me. Therefore, in balancing the advantages and disadvantages of the army and the law in order to a decision of the question, Which shall I select as my occupation? I think I have nothing to do with certain objections that many would advance, that it would be changing my business,—it would betray a want of fixedness of purpose,—it would be an act of inconsistency. To be sure, some of the studies at West Point throw no light upon the law, but most of them contribute, and contribute in an eminent degree, to induce the habits and call out the faculties essential to the able lawyer. Something more is wanted,—as a knowledge of the classics, of ethics, of history. Three years’ rigorous, systematic devotion of my leisure moments to these pursuits would more than place me on a level with the graduates of our colleges; by economy enough of my pay could be laid up to defray my expenses, should I then resign and go through a three years’ study of the law. As the thing, therefore, can be accomplished, as the law for many reasons would suit me better than the army, as I have no false notions of delicacy on the ground of consistency, etc., I have at length concluded to give up the army for the law. As soon as I decided, I began to act. On that very day, about three weeks since, I commenced Latin and a course of reading in History. Greek I shall commence next November. As I do not wish justly to render myself liable to the charge of hastiness or obstinacy, I have determined to consult my friends. If they can adduce reasons against my course, I should be very much obliged if they would let me know them. The thought that one’s course is approved by his friends is consolatory,—it serves to strengthen his confidence in his own judgment. It removes many cross currents that would impede his course. You it was that first suggested my application to enter the military academy. Though the military academy was not intended to make lawyers, yet in my case I hope it may be an example that “the longest way round is the shortest way home.” I have been very fortunate in making the acquaintance of Mr. Benjamin Hazard, whom (by report) you must know. He has the reputation of being the first lawyer in the State, and is unquestionably au fait with his profession. He has been so kind as to give me a great deal of information both with regard to law and lawyers in this country, and the best method of studying law. Mr. Hazard lent me some time since Warner’s Law Studies. I read it through twice very carefully, but much of what he said I thought totally inapplicable to the profession in this country, much that was contradictory, and some opinions I was confident were wrong. I wish you would write me soon and give me your opinion of my course, which is to remain in the army till the 1st of August, 1843, then to resign and enter some office in Boston or Newport for three years. From all I can learn, I think that Jeremiah Mason, of Boston, would be the man for me. Whether he takes students I know not. Webster, Mr. Hazard tells me, contends that Mason is the first lawyer in the country,—superior to himself. Remember me to your own family, and my friends generally.

Your nephew,
I.I. Stevens.