Half of a thing

The human being is only half of a thing. He likes to think that he is a whole of a thing but the truth is that he is only half of a thing. So even whilst he repeatedly tells himself that he is the whole of a thing he runs around looking for the other half of a thing to prove to himself that he is actually the whole of a thing.
Now when it comes to the other half of a thing, it would seem that the other half of a thing is not an easy thing to get hold of. No one really seems to know why that is the case. But, if you happen to catch sight of it somewhere, please let us know because there are always people looking for the other half of a thing.