The only change Vronsky detected in him was that subdued, continual radiance of beaming content which settles on the faces of men who are successful and are sure of the recognition of their success by everyone.

Vronsky knew that radiant air, and immediately observed it in Serpuhovskoy.

As Serpuhovskoy came down the steps he saw Vronsky.

A smile of pleasure lighted up his face.