Charles Taylor's magnum opus Sources of the Self (1989) remains the most ambitious attempt in contemporary philosophy to trace the historical genesis of modern identity — to ask not merely "what is the self?" but "how did we come to be the kinds of selves we are?" The question is collective before it is individual: the modern self is not a private achievement but a shared cultural form, one that has been produced through centuries of moral, spiritual, and political history and that shapes us before we are old enough to question it.

Taylor's central argument is that the modern identity is constituted by three related developments. The first is the internalization of moral sources: where pre-modern thinkers located the Good in a cosmic or divine order external to the subject, modernity progressively relocated it within the self — in conscience, in reason, in authentic feeling, in the depths of subjective experience. The Augustinian move toward interiority (know God by turning inward rather than outward) was a crucial hinge: it established a grammar of selfhood that later Descartes secularized, Locke politicized, and Rousseau romantically intensified. The second development is the affirmation of ordinary life: modernity elevates the everyday — work, family, sexuality, the satisfactions of bodily existence — to the status of spiritually significant domains, displacing the hierarchical valuations of medieval Christendom that placed contemplation above action and the sacred above the secular. The third is the expressivist ideal: originating in Herder and Romanticism, this is the view that each person has an original way of being human that they must express and realize, and that failing to do so constitutes a failure of authenticity — of being true to what one most fundamentally is.

These three strands weave together to form what Taylor calls "the modern identity" — a self that is inward, ordinary, and expressive, and that understands itself as the source of moral authority, the locus of meaningful life, and the measure of authentic existence. The collective significance of this formation is that it is not merely a philosophical position that some people hold; it is the background structure of taken-for-granted assumptions within which modern Westerners navigate their lives. Taylor uses the term "moral ontology" to describe this background — the implicit framework of what matters, what counts as reason for action, what constitutes a good or bad life — and argues that modernity has a specific moral ontology that most of its inhabitants have never explicitly examined.

At the collective scale, the rise of the individual self produces a cultural form that is simultaneously liberating and burdening. The liberation is real: the modern insistence on the value of each individual's inner life, on the right to self-determination, on the authority of conscience against external command, has driven the expansion of human rights, the condemnation of slavery, and the gradual extension of recognition to groups previously excluded from full moral standing. Taylor is not a critic of modernity in the manner of certain postmodernists who simply negate its achievements; he is attempting to recover the moral sources from which those achievements drew their energy, which he believes have become obscured by the reductive materialisms and procedural liberalisms that dominate late modern culture.

The burden side of the equation is what Taylor calls "the malaise of modernity" — a cluster of concerns that recur in modern culture and that he addresses in a later, shorter work of the same name. These include the worry that individualism has become a form of self-enclosure, a narrowing of horizon in which what matters is only what matters to me, leaving a sense of flatness in which nothing seems genuinely important. They include the worry that instrumental reason — the calculus of means and ends, the optimization of efficiency — has become the dominant framework for evaluating action, crowding out considerations of quality, meaning, and the intrinsic worth of things. And they include the worry that democratic politics, by reducing all questions to the aggregation of individual preferences, has produced forms of governance that are technically legitimate but substantively impoverished, leaving citizens with a sense that the important decisions are made elsewhere, by forces outside their reach.

Taylor's diagnosis has a specific historical structure. He argues that modernity has not simply abandoned its moral sources but has become confused about them. The Romantic and expressive currents that gave individualism much of its moral energy — the sense that the depths of the self are worth exploring because they connect to something beyond mere self-interest — have been severed from the cosmic or transcendent frameworks that gave those depths their significance. The result is what Taylor calls "subtler languages" of self-expression that have become detached from the moral sources that originally animated them, leaving modernity unable to fully articulate why the things it values most — individual dignity, authentic selfhood, expressive creativity — actually matter.

Law 1's concept of Unity is directly engaged here: the rise of the individual self is a specific cultural form of the person-collective relationship in which the person is understood as the ultimate unit of moral and political reality, and the collective is understood as an instrument for that unit's realization rather than a constitutive context for its formation. Taylor's critique is that this inversion, while containing genuine moral insights, has been pushed to an extreme that undermines its own foundations. The self that has no obligations beyond its own authenticity, no sources beyond its own inner experience, no framework larger than its own preferences is not more free than the pre-modern self embedded in cosmic and communal order — it is more anxious, more fragile, and paradoxically less capable of the self-determination it claims as its highest value.

Law 2's narrative dimension enters through Taylor's persistent attention to the stories through which modern identity understands itself. The modern self, he argues, necessarily exists against a "moral background" — a sense of what has higher or lower significance, what represents real advancement or decline, what constitutes a good life. This background is always narrative in structure: it orients the self in relation to a story of where it has come from and where it is going. The crisis of modern identity is in part a crisis of this background narrative: when the traditional narrative sources (Christian salvation history, civic republican virtue, Enlightenment progress) lose their compelling force for large numbers of people, the background becomes uncertain, and the self loses its sense of where it stands.