אַל תִּסְתַּכֵּל בַּקַּנְקַן אֶלָּא בְּמַה שֶּׁיֵּשׁ בּוֹ

ביטוי (אנגלית)

Look not on the jar but on its contents

הגדרה (אנגלית)

Figuratively: Do not judge only by the external appearance of a person or an object, but also thoroughly consider its content and abilities.

(Rabbi says: 'Look not on the jar but on what is in it; there is a new jar full of old (wine), and an old jar that does not even contain new (wine)' – Avot 4:20-21; and also: 'Just as there is a new jar full of old wine, so too there is a child whose taste is as that of the elders, and there are elders who are lesser in wisdom than the children' – R. Ovadiah of Bartenura, ibid.)