Not by age but by character is wisdom acquired.

Plautus’ line (often quoted in English as “Not by age but by character is wisdom acquired”) contrasts mere longevity with moral and practical formation. The point is that wisdom is not an automatic byproduct of getting older; it is earned through the shaping of one’s character—habits, judgment, self-control, and experience honestly assimilated. In a Roman context, where seniority and age could command deference, the sentiment undercuts the assumption that elders are necessarily prudent. It also implies a standard by which youth may be wise and age may be foolish: wisdom is a quality of the person, not a number of years.