I couldn't imagine losing the ability to speak. But for people who've suffered a stroke or other brain damage this can be their reality.
That's why scientists have developed a brain atlas of language. It reveals exactly which areas in a person's brain are associated with individual words. This incredibly detailed interactive tool was made by scanning the brains of healthy volunteers as they listened to stories.
Lots more work is needed to fine-tune this virtual map, but this kind of research gives me hope that one day those who can't speak will truly be able to 'say' what's on their minds.