01.12.1915. Petrograd. You have probably noticed that I have completely ceased to mention (in my letters) painting, and maybe even rejoiced that I forgot about this hobby. God knows I did everything in my power to cope with it. I persuaded myself so much that I wondered how positive I was. First, it's an expensive case, not affordable, and before it starts to generate income (if it ever happens), you have to pay yes for it. Secondly, what can be more accurate than mathematics, especially if it will be crowned with a diploma of Bestuzhevsky courses? It must have been a long time ago that I would have been sitting between two chairs, if not for one case that suddenly made me decide. The term of payment for the next semester has come, I sat without money and was going to borrow from the Kaufman, whom I already have to when I met at the Konnogvardeyskomu cadets with whom I came to St. Petersburg, and we were still together overnight at the Society for the Protection of Women. Since then,