It is not a correct deduction from the Principles of Economics that enlightened self-interest always operates in the public interest. Nor is it true … - John Maynard Keynes

Practical men, who believe themselves to be quite exempt from any intellectual influences, are usually the slaves of some defunct economist. ... in the field of economic and political philosophy there are not many who are influenced by new theories after they are twenty-five or thirty years of age, so that the ideas which civil servants and politicians and even agitators apply to current events are not likely to be the newest.

He did read the riddle of the heavens. And he believed that by the same powers of his introspective
imagination he would read the riddle of the Godhead, the riddle of past and future events divinely foreordained,
the riddle of the elements and their constitution from an original undifferentiated first matter, the
riddle of health and of immortality. All would be revealed to him if only he could persevere to the end,
uninterrupted, by himself, no one coming into the room, reading, copying, testing-all by himself, no
interruption for God's sake, no disclosure, no discordant breakings in or criticism, with fear and shrinking as
he assailed these half-ordained, half-forbidden things, creeping back into the bosom of the Godhead as into
his mother's womb. 'Voyaging through strange seas of thought alone', not as Charles Lamb 'a fellow who
believed nothing unless it was as clear as the three sides of a triangle'.

A ‘sound’ banker, alas, is not one who sees danger and avoids it, but one who, when he is ruined, is ruined in a conventional and orthodox way along with his fellows, so that no one can really blame him.