I did not get much from this book, but, to be charitable, this has probably more to do with the kind of philosophy I do appreciate than with the book itself. I have little patience for most philosophy outside of analytic (including proto-analytic, if that's a word) and pre-modern philosophy (from Ancient to Medieval), and this is neither. Taylor's approach is perhaps the most eclectic I have ever seen. In addition to the modern classics of virtue ethics (Foot, MacIntyre, Hursthouse, Shklar) the index contains about two dozen references to Aquinas, eighteen to Kant, about a dozen each to Aristotle and Hume, and then at least one to Kierkegard, Kolnai, Machiavelli, Mill, Murdoch, Nagel, Nietzsche, Rawls, Reid, Sartre, Scheler, Schopenhauer, Scruton and Spinoza. This intellectual diversity might seem attractive to some, but I found it quite distracting. Indeed, the topic of the book, virtue ethics, it intimately connected to moral psychology, anthropology and metaethics. But, to take the three most frequently cited authors, Aquinas, Hume and Kant had extremely different positions on these topics, and I don't think their virtue ethics can be detached from these positions and made to complement one another in such a decontextualised fashion.
Second, the book contains a lot of psychologising, by which I mean descriptions of what the author thinks is going on in the heads of the people characterised by the "deadly vices" (and their subtypes) which she discusses. Unfortunately, she does that without any input from modern psychology or brain science, and chooses instead to focus on characters from various plays and novels (and even operas), which she proceeds to treat as a psychoanalyst would a patient. Much of the book is devoted to exemplars of the vices discussed, drawn from Shakespeare, Dante, Dickens, Balzac, Becket, Ibsen, Flaubert, Ibsen, Dostoevsky, Eliot, Proust, Molière and Sartre. Individual characters even have their own entries in the index. This may be a useful approach, but I am much more receptive to, say, arguments from evolutionary psychology. For instance, at one point (p132), Taylor criticises Kant's conception of love as "delight in the other's perfection", saying "Love is rarely so motivated. More plausibly it might be said that it is in the nature of love to ascribe to the other certain perfections. It is no doubt true that often, at least in personal love, the other's image is an idealized one and his or her value plain to the lover only". This is merely asserted, and not argued for. But from an evolutionary perspective, it is clear that we have evolved to respond to genuine qualities in our potential partners. Louise Perry's recent book on the failures of the sexual revolution, for instance, shows that women in particular are very discriminating as to the kinds of men they want to father their children (even if their good sense has been hijacked by the brainwashing of the sexual revolution.)
Third, the book is supposed to show that the so-called deadly vices (sloth, envy, avarice, pride, anger, lust and gluttony) "were correctly so named" (p1.) But because the author fails to specify her anthropology, it is not clear how literally this is meant to be taken and what exactly gets killed. In Catholicism, a deadly sin is one that kills the life of the soul, i.e. makes it fall from the state of grace to the state of mortal sin, out of which it can only rise through confession or perfect contrition, and which, if the person dies in it, will doom her to eternal damnation. This much I can understand, even if I don't think that was the teaching of either ancient Judaism or of the historical Jesus. But Taylor probably does not believe in a soul and she does not appear to be a Christian or even a theist (at one point, she writes that "Humility is understood as a specifically Christian virtue, concerned with the relation of human beings to a deity, and awareness of their insignificance from that point of view" p146- the expression "a deity" is telling.) So what does she mean exactly by the vices being "deadly"? Probably nothing more than that they are particularly serious, and more so than vices not on the list. But I don't remember her making any attempt to show why that list was definitive and exhaustive, and why other vices are not deserving to figure on it.
Interestingly, the Christian phrase is "deadly sins". But Taylor has chosen to replace it with "deadly vices", treating the two phrases as synonymous (the first sentence of chapter two talks of "the vices traditionally labelled 'deadly sins'" p13.) But a vice is a character trait, a pattern of behaviour, while a sin is an act. So the two phrases are obviously not synonymous.
Finally, I am not sure how carefully Taylor has read the philosophers she quotes (it's hard enough when you focus on just one, let alone two dozen.) For instance, she says of the "deadly vices" that traditionally, "their overall defect was said to consist in inadequate control of reason over the passions" (p13.) In support of this, she only quotes Thomas Aquinas: "vice is contrary to man's nature, insofar as it is contrary to reason". Obviously, there is a difference between what this quote says and what she makes it say.
So if you like an eclectic, decontextualised approach to ethics based on the great classics of fiction, and are not averse to armchair psychology, you might find this book to your liking. Indeed, Jean Porter (who is a much better philosopher than I am, because she is actually a philosopher) thinks that Taylor has a "very good discussion" of the intentionality of the appetites.