EXISTENCE, WHAT DO YOU UNDERSTAND BY IT?

We say this thing exist but we have not seen it face to face how then do we know it exist. In this audio record the host will share what he understands by existence.

Where do we draw the line between what we love, our dream and where we have to sacrifice that thing that we love, our dream and ambition for the better of others. So other can be at advantage, for the greater good. So other will not be hurt. WHERE DO WE DRAW THE LINE?