Loneliness ? sociality ? limits ? human ? essentialist approach ? existentialist approach.

Each of issues of loneliness and sociality is widely analyzed nowadays. The aim of the paper is to analise them as antithetical or mutually influenced and overlapping poles of human being and existence, i.e. as phenomena of philosophical anthropology. Seeking answers on atributive character (or denying it) of sociality and loneliness is alaborated within essentialist and existentialist methodological approaches. Despite of the mostly accepted viewpoit on definiton of man as social being within essentialist approach, the atributive level of loneliness is often contested. The possible reason is its unclear content used by different authors. The paper deals with the analysis of notion in the history of philosophy, which results in the shaping of different modes of loneliness (derived from Plato?s understanding of man as ?isolated atom? whose essence is defined by the measure of insight he can acquire or from Aristotle?s understanding of man as zoon politikon). In the text the loneliness is understood as (1) a state of a mind and (2) a social problem caused by the (voluntary or forced) lack of communication and contacts with other(s).