In this painting ['Moscow'], I was in fact in quest for a certain hour, which was and which remains always the most beautiful hour of the day in Moscow. The sun is already low and has reached its highest force, which it has searched all the day, to which it has aspired all the day... The sun dissolves all Moscow in a spot, which as a frenzied tuba makes entered into vibration all the inner being, the whole soul... Rendering this hour seemed the biggest, the most impossible of the happiness for an artist. These impressions renewed every sunny day. They brought me a joy which shattered me until the bottom of the soul, and which reached until ecstasy.