Tchaikovsky left St. Petersburg early in January, 1866.

At this time his letters show his depth of tenderness for his own people, his first feelings of loneliness in the strange city, his indifference to his surroundings, and finally his gradual attachment to Moscow, which ended in being “the dearest town in the world.”

The Life & Letters of Peter Ilich Tchaikovsky — Part 53

“MY DEAR BROTHERS,--My journey, although sad, is safely over. I thought about you the whole way, and it grieved me to think that lately I had overshadowed you with my own depression, although I fought hard against it. Do not, however, doubt my affection, even if I do not always show it outwardly. I am staying at the Hotel Kokorev. I have already seen Rubinstein and been introduced to two directors of the Musical Society. Rubinstein was so pressing in his invitation to me to live with him that I could not refuse, and shall go there to-morrow.... I hug you both. Do not cease to love me. Give my remembrances to everyone. Write! I will write again soon. I have just written to Dad. You must also do so.”

The Life & Letters of Peter Ilich Tchaikovsky — Part 53

“DEAR BROTHERS,--I am now living with Nicholas Rubinstein. He is a very kind and sympathetic man. He has none of his brother’s unapproachable manner, but in other respects he is not to be compared with Anton--as an artist. I have a little room next to his bedroom, and, truth to tell, I am afraid the scratching of my pen must disturb him after he goes to bed, for our rooms are only divided by a thin partition. I am very busy (upon the orchestration of the C minor overture composed during the summer). I sit at home nearly all day, and Rubinstein, who leads rather an excitable life, cannot sufficiently marvel at my industry. I have been to both theatres. The opera was very bad, so for once I did not get as much artistic enjoyment from it as from the play.... I have hardly made any new acquaintances except Kashkin, a friend of Laroche’s and a first-rate musician, whom I have got to know very well indeed.

The Life & Letters of Peter Ilich Tchaikovsky — Part 53

“Sometimes I feel rather melancholy, but as a rule I am possessed by an insatiable craving for work, which is my greatest consolation.... I have promised Rubinstein my overture shall be performed here before I send it to Petersburg. Yesterday at bedtime I thought a great deal about you both. I pictured to myself all the horrors of the first night after the holidays, and fancied how Modi would hide his nose under the bed-clothes and cry bitterly. How I wish I could have comforted him! It is not a meaningless phrase, Modi, when I tell you to grind and grind and grind, and to make friends with your respectable companions, but not with that crazy fellow X.... I am afraid you will be left behind in your class and be one of those who get into the master’s black books. I have no fears for Toly, so I send him no advice. Toly, my dear, conquer your indolence as a correspondent and write to me. Hearty kisses!”