Essays After Eighty by Donald Hall.
Update, 19th December 2020.
This book was quite enjoyable for me. He writes well (Hall was a poet and journalist for most of his life). It’s a brief read at 144 pages and the price is pretty steep (£9.39 for the Kindle edition) but I didn’t feel short-changed. Full of sharp-eyed observations, unusually frank, and good on the problems that come with ageing.