Sex at age 90 is like trying to shoot pool with a rope.
Time goes by: reputation increases, ability declines.
I've been running a full marathon every year for more than 20 years, and my record is getting worse. Getting older, getting worse. It's natural.
I'm not the player I was.
The present times require the vigor and the activity of the prime of life; but I feel the increasing infirmities of age to such a degree, that I am conscious I cannot serve you to advantage.
I still use a typewriter from time to time, but because I can't type as well as I used to, I really don't use one very much.
I don't subscribe to the view that talent is deteriorating. I think every generation is brighter than their previous generation.