«What is the precise nature of the relationship between the Muse and the poet in early Greek poetry? Whatever it is, the poet is certainly not the unconscious instrument of the divine, as some scholars as sugested. G. M. A. Grube, for example, says of the invocations in Homer: ‘When Homer invokes the Muses on his own account, everything is inspiration and he speaks as if the poet were but a passive instrument.’ The first three words of the Iliad (Mênin áeide theá) might indeed be taken to suggest that the poet is nothing but the instrument of the goddess. But the request for specific information at 8 (Who then of the gods brought them together to contend in strife?) suggests that the poet is an active recipient of information form the Muse rather than a passive mouthpiece».
P. Murray, “Poetic inspiration in Early Greece”, en: I. J. F. de Jong (ed.), Homer. Critical Assessments, vol. IV, 1999, pp. 31-32.