Alas, Strogatz has made one of the (many edifying and entertaining) footnotes from Körner's The Pleasures of Counting obsolete:

> David Tranah ... suggested that a different title would help [sales]. For once, I did not take his advice and the title The Joy of x remains available.

(to understand this locution it may help to know that, in a more prudish century, The Joy of Sex made a big impression when it came on the scene)