'The instinct that makes people rich'

Turning over a popular magazine, I find a queer and amusing example. There is an article called 'The instinct that makes people rich'. It is decorated in front with a formidable portrait of Lord Rothschild. There are many definite methods, honest and dishonest, which make people rich; the only 'instinct' I know of which does it is that instinct which theological Christianity crudely describes as 'the sin of avarice'. 

From 'All things considered'