The Four Levels of Speech are a fundamental detail that underlies the Vedic perspective. It is the nature of how the world comes to be.
4 distinct levels of speech:
Para – absolute, Self, totality
Pashyanti – first impulse, faint feeling but undifferentiated, flow
Madhyama – ‘middle one’ – sound on level of mind
Vaikhari – fully expressed speech, vocal cords.
This was formerly a longer post but I plan to write a more comprehensive article later.