The lesson in this to young people: you can either sell your time by the hour, or buy other's time and use that productively. The former is very finite, the latter scales.
Why, if I didn’t know better, I’d imagine the gp might have been thinking about noted political theorist and agitator Karl Marx, writing briefly in Wage Labor and Capital (1847) [0] or later in his heftier Das Kapital (1867-1894) [1].
Offered without comment, except that better ebook examples are surely available somewhere: