Is the tranquil mind vipassana; assessing before consciousness; and dualized self?

I read the following on the internet: > Vipassana, the tranquil mind, is the core. > > When emotions arise, the tranquil mind observes and assesses before > the conscious is involved. > >The tranquil mind will recognise the burning heart and dualise > the self. When the self becomes two, the emotions don't rule the mind > and the mind doesn't rule the emotions. Is vipassana the tranquil mind? Does the tranquil mind observe before the arising of consciousness? What is meant by dualizing the self? How does the tranquil mind dualize the self? How does the dualized self stop emotions not ruling the mind?