The article deals with one of the key categories of non-classical sociology that is human lifeworld. In general, the problem area of understanding this category is constituted by contexts of human nature, human development, and human quotidian existence. The category of human lifeworld correlates to the level of semantic grounds with social act constructs, pattern variables, and social forms of communication. Clarifying this category eliminates the sociological thinking from the pitfalls of “civilizational progressivism”.