It's all in how you look at things

You know those sayings "The glass is always half full," or " The glass is always half empty?"
I did some thinking and realized that a glass half empty is the same as a glass half full.
It just depends how you look at it.
A glass half full sounds better than a glass half empty right?
So it's basically the same thing, but with different perspectives.
Just a random thought that came to mind.