"Thank you."

The older-looking Doctor nearly smiled. He would have manners in this future incarnation. Indeed he would. He studied the younger-looking him, quietly pleased. Meek and gentle he might appear, but character lay beneath the even features. The hand not gripping the cane drifted up to caress that smooth cheek. Aged and grooved it might be, but it was also unmeasurably gentle. The lips were time-worn as well, though apparently no less welcome for their feel.

A pressure on the shoulder, an encouraging squeeze, and then he hobbled away. Satisfied.