Ottimisti o Pessimisti?

Un pò di follia ogni tanto serve, per cui:
Bicchiere mezzo pieno o mezzo vuoto?

"Pallino Beer Glasses is the glass half empty or half full? Whichever is your philosophy, these witty glasses will agree with your point of view. These sturdy glasses have a line at the halfway mark, with the Italian word for optimist above the line and pessimist below"