In this period of my father’s life there are two things which it is impossible not to be struck with: one of them unfortunately a very common circumstance, the other a most uncommon one. The first is, that in his position, with no resource but the precarious one of writing in periodicals, he married and had a large family; conduct than which nothing could be more opposed, both as a matter of good sense and of duty, to the opinions which, at least at a later period of life, he strenuously upheld. The other circumstance, is the extraordinary energy which was required to lead the life he led, with the disadvantages under which he labored from the first, and with those which he brought upon himself by his marriage. It would have been no small thing, had he done no more than to support himself and his family during so many years by writing, without ever being in debt, or in any pecuniary difficulty; holding, as he did, opinions, both in politics and in religion, which were more odius to all persons of influence, and to the common run of prosperous Englishmen, in that generation than either before or since; and being not only a man whom nothing would have induced to write against his convictions, but one who invariably threw into everything he wrote, as much of his convictions as he thought the circumstances would in any way permit: being, it must also be said, one who never did anything negligently; never undertook any task, literary or other, on which he did not conscientiously bestow all the labor necessary for performing it adequately.

The Greek and Arithmetic lessons weren’t the only disciplines James taught John Stuart, it was the energy, the willing to take on more responsibility, and personal discipline that he modeled.

Mill, John Stuart. Autobiography. United Kingdom, Penguin Publishing Group, 1989.