When you see a rich man’s wife (or anyone else’s wife) shaking her head over the thriftlessness of the poor because they do not all save, pity the lady’s ignorance; but do not irritate the poor by repeating her nonsense to them.

George Bernard Shaw (1856-1950) Irish playwright and critic

The Intelligent Woman’s Guide to Socialism and Capitalism, ch. 2 (1928)
    (Source)

See also Melville (1884).