Optimist: The Glass Is Half Full. Pessimist: The Glass Is Half Empty

Josiah Stamp? Vivian F. Rausch? David Dodge? Hugh Overman? Ted Healy? Anonymous?

Dear Quote Investigator: Life impressions differ dramatically between people with sunny dispositions versus morose temperaments. This point is cleverly illustrated via the disparate reactions elicited by a container partially filled with liquid:

The optimist says the container is half full.
The pessimist says the container is half empty.

Variants of this saying refer to different containers, e.g., a bottle, a glass, and a gas tank. Josiah Stamp who was the director of the Bank of England has received credit for this expression, but I have not seen a solid citation. Would you please explore the provenance of this proverbial saying?

Quote Investigator: The earliest match found by QI appeared in “The Evening Sun” of Baltimore, Maryland in April 1929. The statement occurred in a filler item without attribution. Boldface added to excerpts by QI:[1] 1929 April 9, The Evening Sun, (Filler item), Quote Page 1, Column 2, Baltimore, Maryland. (Newspapers_com)

If he says his gas tank is half-full he’s an optimist. If he says it’s half-empty he’s a pessimist.

Based on current evidence the originator remains anonymous.

Josiah Stamp helped to popularize this witty comparison by using it during a speech he gave in 1935, but the saying was already in circulation.

Below are selected citations in chronological order.

Continue reading Optimist: The Glass Is Half Full. Pessimist: The Glass Is Half Empty

References

References
1 1929 April 9, The Evening Sun, (Filler item), Quote Page 1, Column 2, Baltimore, Maryland. (Newspapers_com)