The Teacher the Buddha speaks of is the voice from our heart.
What does it mean to trust ourselves. Can we be so true to who we are that we can begin listening to ourselves. Who are we listening to when we listen to ourselves. How do we know what is right and wrong. No one else but ourselves can know if we are being true to ourselves.
We all have a built in teacher. This is the teacher that the Buddha is talking about. Our teacher is the voice from our heart. When we begin to shed our minds’ acquired ideas and beliefs of ourselves and begin to listen to our teacher within, we learn the truth of ourselves. We were never separate from our surroundings, but rather, we were always woven into the universe itself with no separation.
We are the Universe.