From the Woody Allen movie “Play It Again, Sam”.

“Allan: That’s quite a lovely Jackson Pollock, isn’t it?
Museum Girl: Yes, it is.
Allan: What does it say to you?
Museum Girl: It restates the negativeness of the universe. The hideous lonely emptiness of existence. Nothingness. The predicament of Man forced to live in a barren, Godless eternity like a tiny flame flickering in an immense void with nothing but waste, horror and degradation, forming a useless bleak straitjacket in a black absurd cosmos.
Allan: What are you doing Saturday night?
Museum Girl: Committing suicide.
Allan: What about Friday night?”

The museum girl’s glass is obviously half empty.