A key point of the relation between language and thought is the explanation of how a product of thinking is proposed in order to be transmitted to a listener. In particular, we focus on the mental processes through which a mental model is modified by the intention to be communicated. The speaker has to translate the original mental model in words, to make it comprehensible to the listener. To be felicitous, such a process involves a series of bounds, among which are: 1. the scheme of the listener utilized by the speaker; 2. the differences between the mental model of the speaker and the corrisponding one that the speaker believes the listener has. Our analysis interrupts before the listener's construction of the model, based on the speaker's proposition, and the following recursive models. However, we claim that the modifications induced by communicative intention on mental models are the first step of the entire process of dialogue.

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