From my arrival at Chambery to my departure for Paris, 1741, included an interval of eight or nine years, during which time I have few adventures to relate; my life being as simple as it was agreeable.  This uniformity was precisely what was most wanting to complete the formation of my character, which continual troubles had prevented from acquiring any degree of stability.  It was during this pleasing interval, that my unconnected, unfinished education, gained consistence, and made me what I have unalterably remained amid the storms with which I have since been surrounded.

The progress was slow, almost imperceptible, and attended by few memorable circumstances; yet it deserves to be followed and investigated.

At first, I was wholly occupied with my business, the constraint of a desk left little opportunity for other thoughts, the small portion of time I was at liberty was passed with my dear Madam de Warrens, and not having leisure to read, I felt no inclination for it; but when my business (by daily repetition) became familiar, and my mind was less occupied, study again became necessary, and (as my desires were ever irritated by any difficulty that opposed the indulgence of them) might once more have become a passion, as at my master’s, had not other inclinations interposed and diverted it.

Though our occupation did not demand a very profound skill in arithmetic, it sometimes required enough to puzzle me.  To conquer this difficulty, I purchased books which treated on that science, and learned well, for I now studied alone.  Practical arithmetic extends further than is usually supposed if you would attain exact precision.  There are operations of extreme length in which I have sometimes seen good geometricians lose themselves.  Reflection, assisted by practice, gives clear ideas, and enables you to devise shorter methods, these inventions flatter our self-complacency, while their exactitude satisfies our understanding, and renders a study pleasant, which is, of itself, heavy and unentertaining.  At length I became so expert as not to be puzzled by any question that was solvable by arithmetical calculation; and even now, while everything I formerly knew fades daily on my memory, this acquirement, in a great measure remains, through an interval of thirty years.  A few days ago, in a journey I made to Davenport, being with my host at an arithmetical lesson given his children, I did (with pleasure, and without errors) a most complicated work.  While setting down my figures, methought I was still at Chambery, still in my days of happiness—­how far had I to look back for them!