From Ancient Greece and Rome to 19th century Germany, the idea of using speech as a thinking methodology has been observed and documented.

Constructive thinking requires free speech, as speech then becomes a creative process that gives birth to thoughts.

• Talking out aloud opens up the words, providing full thought retrieval, and using rhythm and intonation to bring out the main idea while increasing the dialogical abilities of our own speech.
• Mute inner speech, on the other hand encourages short-hand language and mental shortcuts, ...

The problem stems from the fact that self-talk is considered a kindergarten version of inner-speech, which is the silent voice in our heads.

Adults normally internalize their self-talk and leave the talking aloud to children, people with mental health issues, and when in private settings....

Activities like writing, playing a musical instrument or dancing are not starting from the brain and then emitting from the body, but take the entire body-mind as a whole, integrated system, with each part influencing and complementing the other.