Abstract
Thinking involves many elements of sound that philosophical tradition has repressed. Breathing, rhythms and collateral noises participate in the making of idealities, even the most abstract. In order to hear them, the voice needs to be considered as one sound among others and as multiple, even when it comes from the same speaker, following different protocols of enunciation. Listening to the recordings of seminars and studying the role played by modern sound technologies make it possible to hear subterranean meanings and tensions at the heart of mental elaboration. Thinkers and writers could be defined by the way they handle the acoustic environments favourable to the way they speak and write, whether by selection, mixing or silence. An ‘acousmatic’ reading aims to listen to this sonic investment in texts and to hear the complex vibrations of their thought.