Listen should be on 60-70% and talking or speaking on from 40 up to 30%.

Just by listening without looking I can tell you is it a white man singing or black.... as far as now is easy!

From listening and silence can be learn a lot of, but these skills to be learn that's the hard and complicated work...

Listening to podcast, reading a book, listening to an aduibook and watching films isn't waste of time. It's how somebody becomes wise!