Think in Old and Middle English Kolbe-Hanna, Daniela Trier University D'hoedt, Frauke KU Leuven Cuyckens, Hubert KU Leuven English comment clauses, i.e. clauses expressing “speaker attitude or stance” (Brinton 2008: 241), have been the subject of a wealth of research, particularly relating to the grammaticalisation of the comment clause I think (e.g., Brinton 1996: 212-254, 2008; Stenström 1995; Thompson & Mulac 1991a,b; van Bogaert 2011). The purpose of the present paper is to examine comment clause uses involving the verbal predicate THINK. The comment clause function/use of I think is illustrated in examples (2) and (3), ), where think can be paraphrased as “the speaker holding an opinion, judging, considering” (see OED, think v.2 III) and thus expresses speaker attitude/stance towards the main proposition. While traditional wisdom has it that this use as a comment clause presupposes semantic bleaching (see, e.g. Brinton 2008: 49-51) of the “original, lexical” meaning ‘to hold in the mind’, the distinction is not straightforward. Indeed, the difference between lexical and comment clause usage of sentence-initial I think as in (1) is discernible at the level of prosody only (see, e.g. Kaltenböck 2008, Dehé & Wichmann 2010). Our claim is thus that think in its comment function is not bleached to such an extent that it differs substantially in meaning from lexical think in a matrix clause. (1) I think exercise is really beneficial, to anybody. (Thompson & Mulac 1991: 313) (2) Exercise is, I think, really beneficial to anybody. (3) Exercise is really beneficial, to anybody, I think. Moreover, considering that think in its comment function can be found from as early as Old English (cf. (4)), it appears that the comment function is a meaning intrinsic to think, both in initial matrix clause position (see (1) above) and in parenthetical position (4). (4) Rogcer […] gaderade his folc þan cyngce to unþearfe—he þohte—ac hit wearð heom seolfan to mycclan hearme. (OED, Anglo-Saxon Chronicle) ‘Roger gathered his folk to the king’s detriment—he thought—but it came to be much harm to himself’. ( stance towards the truth value of the proposition: Roger thought/believed he was taking actions to the king’s detriment, but the speaker comments that in fact he didn’t) Our aim is to present a detailed diachronic study of the uses of THINK expressing speaker stance/opinion and the distribution of these comment uses in the various possible positions in the sentence (initial, medial, final). From the Leuven English Old to New (LEON) corpus, which comprises over three million words from Old to Early Modern English, we have extracted all instances of þencan (and later forms) to investigate this semantic and syntactic development. In this way, we also hope to provide more insight to the role of semantic bleaching in the grammaticalisation of I think. Keywords: comment clause, grammaticalization, semantic bleaching References Brinton, Laurel J. (1996) Pragmatic markers in English: Grammaticalization and discourse function. Berlin: Mouton de Gruyter. Brinton, Laurel J. (2008) The comment clause in English: Syntactic origins and pragmatic development. Cambridge: Cambridge University Press. Dehé, Nicole & Anne Wichmann (2010) Sentence-initial I think (that) and I believe (that): Prosodic evidence for use as main clause, comment clause and discourse marker. Studies in Language 34(1): 36-74. Kaltenböck, Gunther (2008) Prosody and function of English comment clauses. Folia Linguistica 42 (1): 83-134. Stenström, Anna-Brita (1994) Some remarks on comment clauses. In Bas Aarts & Charles F. Meyer (eds.) The verb in contemporary English, 290-299. Cambridge: Cambridge University Press. Thompson, Sandra & Anthony Mulac (1991a) A quantitative perspective on the grammaticization of epistemic parentheticals in English. In Bernd Heine & Elizabeth Closs Traugott (eds.) Approaches to grammaticalization. Vol 2, 313-329. Amsterdam: John Benjamins. Thompson, Sandra & Anthony Mulac (1991b) The discourse conditions for the use of the complementizer that in conversational English. Journal of Pragmatics (16): 237-251. Van Bogaert, Julie (2011) I think and other complement-taking mental predicates: A case of and for constructional grammaticalization. Linguistics and Philosophy (49): 295-332.