I like to think the glass is a metaphor for life. My viewpoint is that the glass is empty at birth, and totally full at death. Each day adds something to the contents. With age comes a fuller life and a fuller glass.
People who are fearful of ageing might view the metaphor as being one whereby the glass is full at birth, and empties as we age.
Contrary to what the beauty industry would like us to believe, we aren’t going to be able to stop the hands of time. Regardless of what our appearance may be, we just keep getting older. The only choice we have, really, is whether we think our lives are enriched with time, or degraded with it. I know what I choose.
Quotes and other thoughts about this:
Is the glass half full, or half empty? It depends on whether your’re pouring, or drinking.” Bill Cosby
Some people see the glass half full. Others see it half empty. I see a glass that’s twice as big as it needs to be.” George Carlin
Some folks go through life pleased that the glass is half full. Others spend a lifetime lamenting that it’s half-empty. The truth is: There is a glass with a certain volume of liquid in it. From there, it’s up to you!” Dr. James S. Vuocolo
There is even a page dedicated to a debate on whether the Glass is half full or half empty.
My Similar Opinion Story: Forming Opinions- another debate