Quote: "Or take doctors: they appear to peak in their thirties, with steep drop-offs in skill as the years pass" Source: https://paminy.com/book-summary-strength-finding-success-happiness-deep-purpose-second-half-life/
Thanks for the picture - I knew it was E Nesbit, but was querying that all the other answers had 2 cristian names, so what was hers ? I did, eventually, find one reference on line to E S Nesbit, so I am assuming (?) that is correct