In this book it has been proposed that the mirror system can be a scaffold for building a language-ready brain, because of its property of matching action observation with action execution, a feature that can correspond to the “parity” requirement for communication. In this commentary we will first emphasize two properties of mirror neurons and motor cortex that may have contributed to language: the generalization of the property of understanding action goals and the capacity to decode the goal of action sequences. Then we will propose, based on recent behavioural and neurophysiological data in monkeys, that the vocalization in non-human primates could have reached a partial voluntary control, thus contributing to the emergence of a communicative system relying on the coordination of gestures and utterances.