From back cover:

“The union is often referred to as some crystallized structure or organization. This is at complete odds with Stirner’s actual writings on union, association, and relations between individuals in “The Unique and Its Property”. Stirner does not discuss the union as some static relation between two or more individuals, but instead as shared life activity of two or more self-interested individuals. The association is one of both immanence and transience, it is felt, lived, and experienced in-the-moment.”

“We do not aspire to communal life but to a life
apart.” ― Max Stirner

The Union of Egoists pdf