Something is missing: that's as close as I can come to...

Something is missing: that's as close as I can come to naming the sensation, an awareness of missed or thwarted connections, or of a great hollowness left where something lovely and solid used to be. ...There is something fundamentally insatiable about being human, as though we come into the world with a kind of built-in tension between the experience of being hungry, which is a condition of striving and yearning, and the experience of being fed, which may offer temporary satisfaction but always gives way to new strivings, new yearnings.