Halliday & Matthiessen (2014: 526, 523):
The parallel between quoting and reporting is not so close with proposals as with propositions, because reported proposals merge gradually into causatives without any very clear line in between. Thus not only are there many verbs used in quoting which are not used in reporting – again the complex ones: we would not write his driver soothed him to be steady or soothed that he should keep steady – but also there are many verbs used to report that are not used to quote, verbs expressing a wide variety of rhetorical processes such as persuade, forbid, undertake, encourage, recommend, as illustrated above; see Table 7-23.
