11. The method according to claim 8 , wherein, in the step of generating said at least one message, text data of said at least one message is generated from said at least one utterance such that said text data is displayed in a form varying in accordance with a value calculated from said at least one interest level and said at least one utterance strength.
19. The method of claim 11 , wherein said varying of said form comprises increasing a font size of said at least one text data in a first case, as compared to a second case, when said calculated value is greater in said first case than in said second case.