As medium for reaching understanding, speech acts serve: a) to establish and renew interpersonal relations, whereby the speaker takes up a relation to something in the world of legitimate social orders; b) to represent states and events, whereby the speaker takes up a relation to something in the world of existing states of affairs; c) to manifest experiences that is, to represent oneself- whereby the speaker takes up a relation to something in the subjective world to which he has privileged access.

p. 308 - The Theory of Communicative Action, 1987