This thesis hypothesizes that the semogenetic properties of language belonging to the stratum of social context known in Systemic Functional Linguistics as ‘ideology’ are realized (at least partly) in the lexico-grammatical features of a text relating to non-categorical and grammatically metaphorical use of modality and non-categorical uses of polarity. To test this hypothesis, a section of a text by philosopher A.J. Ayer was selected. It was selected because it presents an argument in favor of a differing philosophical sense-making framework from that commonly held in society, thus making it a text more conducive to study of semogenetic properties of language and the realizational patternings thereof. The text is analyzed in terms of its lexico-grammatical features, as well as how those lexico-grammatical features are a realization of semogenesis on the stratum of ideology
