All are not hunters that blow the horn.

Understand the thought

Meaning in plain English

Displaying the signs of a role does not prove someone can carry it out. Blowing the horn and being a hunter distinguish appearance from demonstrated ability, without making every visible symbol misleading.

What the words are saying

The horn identifies someone with the activity, but the proverb denies that the signal establishes the whole skill. Figuratively, a title, uniform or confident announcement may be insufficient evidence of what a person can actually do. A useful reading seeks information suited to the task while recognising that presentation can communicate a legitimate role. It should not turn into suspicion of everyone who uses the expected signs. Nor does a modest appearance prove competence. The saying asks for a connection between the role being claimed and the relevant conduct, rather than letting either display or absence of display decide in advance.

Everyday example

A group choosing a workshop leader asks about the proposed session and relevant experience instead of relying only on an impressive role description.

When to use it

Use it when signs of a role are being mistaken for evidence of practical competence.

Agent-assisted editorial interpretation. This explains the words; it does not by itself verify their author or earliest origin.