Seneca the Younger, in advising retirement, had also warned of dangers. In a dialogue called “On Tranquility of Mind,” he wrote that idleness and isolation could bring to the fore all the consequences of having lived life in the wrong way, consequence that people usually avoided by keeping busy—that is, by continuing to live life in the wrong way.
Let’s put a limit to the scramble for money. … Having got what you wanted, you ought to begin to bring that struggle to an end.
Retirement without the love of letters is a living burial.
Most retired business people "know how to work but they don't know how to play; they are completely devoid of the spirit of relaxation and recreation. Such forced idleness is ruinous to the morale of many of the more capable men of affairs."