Verbs Serving As Process In ‘Mental’ Clauses Projecting Ideas

Halliday & Matthiessen (2014: 516, 517):

Examples of verbs serving as Process in ‘mental’ clauses projecting ideas are set out in Table 7-21. The verbs are largely restricted to two of the four types of sensing – cognition and desideration (but usually not perception and never emotion). So far we have concentrated on clauses of the ‘cognitive’ type; these always project propositions. Here a proposition is, as it were, created cognitively; it is brought into existence by a process of thinking.