Half Empty or Half Full

I See it Half Empty
Originally uploaded by *B.G. Lewandowski*.

If you look at a glass and say that the glass is half empty, then you may be a pessimist. You are focusing on the empty, negative space.

shots!
Originally uploaded by urbandude.

Or, if you say the glass is half full, then you are being an optimist by appreciating the good half of what you have.

This is a common expression of one's attitude towards life, probably with parallels throughout the world's cultures.