"A somewhat melancholic feeling of incompleteness. It is a vague and constant desire for something that does not and probably cannot exist, for something other than the present, a turning towards the past or towards the future; not an active discontent or poignant sadness but an indolent dreaming wistfulness."
There’s no reality except the one contained within us. That’s why so many people live an unreal life. They take images outside them for reality and never allow the world within them to assert itself.