by Leo Tolstoy
Serpukhovskoy is a childhood friend of Vronsky's. Even though Serpukhovskoy and Vronsky went through the exact same school and military training, Serpukhovskoy achieves much more professionally than Vronsky does. As Vronsky has always been ambitious, Serpukhovskoy's promotion at the end of Part 3, Chapter 20 stirs up a little jealousy in Vronsky's heart. But only a little – Vronsky decides that having Anna's love is more important than professional ambition.