Construing Orders Of Experience

Halliday & Matthiessen (1999: 106):

Throughout the semantic construal of human experience, there is a differentiation between two orders of reality: between the everyday reality of our material existence on the one hand and on the other hand the second-order reality that is brought into existence only by the system of language. This is a contrast between semiotic phenomena, those of meanings and wordings, and the first-order phenomena that constitute our material environment. (Note that the linguistic processes themselves, as apprehended by our senses, are part of the first-order reality; second-order reality is formed of the meanings and wordings that these processes bring into being.)