 The Ego and Its Own has an intelligible, but scarcely transparent, structure. It is organised around a tripartite account of human experience, initially introduced in a description of the stages of an individual life. The first stage in this developmental narrative is the realistic one of childhood, in which children are constrained by material and natural forces such as their parents. Liberation from these external constraints is achieved with what Stirner calls the self-discovery of mind, as children find the means to outwit those forces in their own determination and cunning. The idealistic stage of youth, however, contains new internal sources of constraint, as individuals once more become enslaved, this time to the spiritual forces of conscience and reason. Only with the adulthood of egoism do individuals escape both material (external) and spiritual (internal) constraints, learning to value their personal satisfaction above all other considerations.