Content
The material that follows is based on the first known English translation, by Steven T. Byington, first published in 1907.
Part One
The first part of the text begins by setting out a tripartite dialectical structure based on an individual's stages of life (Childhood, Youth and Adulthood).
In the first realistic stage, children are restricted by external material forces. Upon reaching the stage of youth, they begin to learn how to overcome these restrictions by what Stirner calls the "self-discovery of mind". However, in the idealistic stage, a youth now becomes enslaved by internal forces such as conscience, reason and other "spooks" or "fixed ideas" of the mind (including religion, nationalism and other ideologies). The final stage, "egoism", is the second self-discovery, in which one becomes self-conscious of oneself as more than his mind or body.
Throughout the book, Stirner applies this dialectical structure to human history. Part one is a sustained critique of the first two periods of human history and especially of the failure of the modern world to escape from religious modes of thinking. Stirner's analysis is opposed to the belief that modern individuals are progressively more free than their predecessors. Stirner sees moderns as being possessed by ideological forces such as Christianity and the ideologies of the modern nation state.
Stirner's critique of modernity is centred on the Protestant Reformation. According to Stirner, Reformation theology extended religious domination over individuals by blurring the distinction between the sensual and the spiritual (thus allowing priests to marry for example). The Reformation also strengthened and intensified religious belief and made it more personal, creating an internal conflict between natural desires and religious conscience. Thus the Reformation only served to further enslave Europeans under spiritual ideology.
Stirner's critique of a progressive view of history is part of his attack on the philosophies of the left-Hegelians, especially that of Ludwig Feuerbach. Stirner sees Feuerbach's philosophy as merely a continuation of religious ways of thinking. Feuerbach had argued that Christianity was mistaken in taking human qualities and projecting them into a transcendent God. But according to Stirner, Feuerbach's philosophy, while rejecting a God, left the Christian qualities intact. Feuerbach had taken a set of human qualities and deified them, making them the only prescriptive view of humanity. This became just another religion for Stirner, a "change of masters" over the individual. Stirner criticizes other left-Hegelians for setting a conception of essential human nature as a goal to be striven for instead of one which is already achieved. So while liberals like Arnold Ruge found the essence of the human in citizenship, and social liberals like Moses Hess found it in labor, all of them made a similar error of ossifying an "essence" of the human and deifying it. For Stirner, "human nature" cannot provide any prescriptions on how one ought to live as one doesn't need to become his nature, but instead he already is ("Your nature is, once and for all, a human one; you are human natures, human beings. But, just because you already are so, you do not still need to become so").
Part Two
Part two is centered on the possibility of freedom from current ideological ways of thinking through a robust philosophical egoism. Stirner's egoism is centered on what he calls Eigenheit ('Ownness' or autonomy). This 'Ownness' is a feature of a more advanced stage of human personal and historical development. It is the groundwork for our world-view.
Stirner's Egoism is a descriptive psychological egoist, though he differentiates between conscious and involuntary egoism. Stirner does not advocate narrow selfishness of a "sensual man":
Selfishness [...] in the Christian sense, means something like this: I look only to see whether anything is of use to me as a sensual man. But is sensuality then the whole of my ownness? Am I in my own senses when I am given up to sensuality?
Stirner's conception of Ownness is a type of self-description:
Ownness includes in itself everything own, and brings to honor again what Christian language dishonored. But ownness has not any alien standard either, as it is not in any sense an idea like freedom, morality, humanity, etc.: it is only a description of the — owner.
In Part II, Stirner discards the concept of freedom, as being of limited value, and replaces it with power and property. In Chapter "My Power", Stirner explores the concept of human rights and their subsequent inherent separation from the self: "The right of 'all' is to go before my right."
In the chapter "My Self-Enjoyment" Stirner discusses longing and "true life", discarding both of them preferring a "non-seeking" man: "Not till I am certain of myself, and no longer seeking for myself, am I really my property; I have myself, therefore I use and enjoy myself." "A man is 'called' to nothing, and has no 'calling', no 'destiny', as little as a plant or a beast has a 'calling'". Further he argues that "[t]he true man does not lie in the future, an object of longing, but lies, existent and real, in the present".
In Part III of Part II, "The Unique One", Stirner gives a summary of the book and its ideas, and ends it as it began: "all things are nothing to me".