Man cannot live by bread alone he must have peanut butter.

This line is a humorous riff on the biblical saying “Man shall not live by bread alone,” substituting “peanut butter” to suggest that mere necessities are insufficient without small comforts or pleasures. Read this way, it functions as a light, domestic joke about appetite and satisfaction—implying that life requires more than bare sustenance. However, the attribution to James A. Garfield is highly doubtful: peanut butter was not a common, widely named staple during Garfield’s lifetime, and the quip has the feel of a later, advertising-era or folk-humor adaptation rather than a documented presidential remark.