"Is the glass half empty or half full?", and other similar expressions such as the adjectives glass-half-full or glass-half-empty, are idioms which contrast an optimistic and pessimistic outlook on a
To illustrate this figuratively: Is this glass half empty or half full?
Pessimism
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Pessimism is a mental attitude in which an undesirable outcome is anticipated from a given situation. Pessimists tend to focus on the negatives of life in general. A common question asked to test for
Is the glass half empty or half full?
…or half full?", and other similar expressions such as the adjectives glass-half-full or glass-half-empty, are idioms which contrast an optimistic and pessimistic outlook on a specific situation or on the world at large. "Half full" means optimistic and "half empty" means pessimistic. The origins of this idea are…
An optimist and a pessimist, Vladimir Makovsky, 1893