In article the theoretical analysis of genesis of a social ideal is carried out. The author proves that the social ideal is caused by type of a sociality and acts in two modified forms: social ideal of communal type and public ideal. The public ideal as a special form of ideas of a perfect society organization appears only in the conditions of modern society and is connected with actualization of the main social contradiction «personality and society». In an ideological discourse we observe two ways of permission of this contradiction: liberal and socialist.
