“Puritanism” is often used figuratively to mean the suspicion of one’s own preferences and the preferences of others. John Stuart Mill this attitude in On Liberty, calling it “the Calvinistic theory.” The connection is that the Puritans had strong Calvinistic leanings. Here is what John Stuart Mill has to say about “the Calvinistic theory” in On Liberty chapter III, “Of Individuality, as One of the Elements of Well-Being,” paragraphs 6-8:
…Thus the mind itself is bowed to the yoke: even in what people do for pleasure, conformity is the first thing thought of; they like in crowds; they exercise choice only among things commonly done: peculiarity of taste, eccentricity of conduct, are shunned equally with crimes: until by dint of not following their own nature, they have no nature to follow: their human capacities are withered and starved: they become incapable of any strong wishes or native pleasures, and are generally without either opinions or feelings of home growth, or properly their own. Now is this, or is it not, the desirable condition of human nature?
It is so, on the Calvinistic theory. According to that, the one great offence of man is self-will. All the good of which humanity is capable, is comprised in obedience. You have no choice; thus you must do, and no otherwise: “whatever is not a duty is a sin.” Human nature being radically corrupt, there is no redemption for any one until human nature is killed within him. To one holding this theory of life, crushing out any of the human faculties, capacities, and susceptibilities, is no evil: man needs no capacity, but that of surrendering himself to the will of God: and if he uses any of his faculties for any other purpose but to do that supposed will more effectually, he is better without them. This is the theory of Calvinism; and it is held, in a mitigated form, by many who do not consider themselves Calvinists; the mitigation consisting in giving a less ascetic interpretation to the alleged will of God; asserting it to be his will that mankind should gratify some of their inclinations; of course not in the manner they themselves prefer, but in the way of obedience, that is, in a way prescribed to them by authority; and, therefore, by the necessary conditions of the case, the same for all.
In some such insidious form there is at present a strong tendency to this narrow theory of life, and to the pinched and hidebound type of human character which it patronizes. Many persons, no doubt, sincerely think that human beings thus cramped and dwarfed, are as their Maker designed them to be; just as many have thought that trees are a much finer thing when clipped into pollards, or cut out into figures of animals, than as nature made them. But if it be any part of religion to believe that man was made by a good Being, it is more consistent with that faith to believe, that this Being gave all human faculties that they might be cultivated and unfolded, not rooted out and consumed, and that he takes delight in every nearer approach made by his creatures to the ideal conception embodied in them, every increase in any of their capabilities of comprehension, of action, or of enjoyment. There is a different type of human excellence from the Calvinistic; a conception of humanity as having its nature bestowed on it for other purposes than merely to be abnegated. “Pagan self-assertion” is one of the elements of human worth, as well as “Christian self-denial." There is a Greek ideal of self-development, which the Platonic and Christian ideal of self-government blends with, but does not supersede. It may be better to be a John Knox than an Alcibiades, but it is better to be a Pericles than either; nor would a Pericles, if we had one in these days, be without anything good which belonged to John Knox.
I am glad that mainstream economics takes as its policy mission getting people more of what they desire, without too much questioning of those desires. This widespread attitude among economists may owe a great deal to John Stuart Mill, who wrote the leading economics textbook of the mid-19th century.