This proverb is part of Spain's rich oral tradition of 'refranes,' which are short, popular sayings that encapsulate practical wisdom. It likely emerged as a cynical but realistic counterpoint to the widespread cultural belief that automatically equates old age with superior knowledge.

This saying reflects a strain of healthy skepticism in Spanish culture, valuing earned wisdom over automatic respect based solely on age. It's a reminder that experience and reflection—not just the passage of time—are what create true wisdom.

The power of this proverb lies in its concise structure and clever wordplay. It creates a direct contrast (antithesis) between what gray hair does ('pelan' - reveals) and what it doesn't do ('aconsejan' - advise). The verb 'pelar' is used idiomatically here; instead of its literal meaning 'to peel,' it means 'to lay bare' or 'to expose' the fact of old age.