Language evolves in such a way that sounds correspond with … the personal, intuitive experience of the listener.

Tammet is pointing to the idea that language is not a fixed code but an evolving system shaped by human perception. Sounds, in this view, come to “fit” experience: phonetic patterns can feel naturally suited to certain meanings because listeners bring their own embodied and intuitive associations to what they hear. The quote suggests that comprehension is partly aesthetic and psychological—listeners respond to tone, rhythm, and timbre as much as to dictionary definitions. It also implies that linguistic change may be guided by what feels expressive or apt to communities over time, rather than by purely logical design.