A man’s character is most evident by how he treats those who are not in a position either to retaliate or reciprocate.

Paul Eldridge (1888-1982) American educator, novelist, poet
“Lanterns in the Night,” Maxim 41, The Jewish Forum (Aug 1948)

Restated by Eldridge in Maxims for a Modern Man, #1198 (1965): "A man is most accurately judged by how he treats those who are not in a position either to retaliate or to reciprocate."

The same sentiment is also made or attributed to Ann Landers, Abigail Van Buren, Malcolm Forbes, James Miles, and (without any reference found) Goethe and Samuel Johnson. A more convoluted version can be found in the 19th Century by Charles Spurgeon.

More examination of this quotation:

• You Can Easily Judge the Character of a Man by How He Treats Those Who Can Do Nothing for Him – Quote Investigator
• Character Is Most Evident by How One Treats Those Who Can Neither Retaliate nor Reciprocate – Quote Investigator