An adage (/ˈædɪdʒ/; Latin: adagium) is a concise, memorable, and usually philosophical aphorism that communicates an important truth derived from experience, custom, or both, and that many people consider true and credible because of its longeval tradition, i. e. being handed down generation to generation, or memetic replication.

An adage sometimes implicates a failure to plan, such as "do not count your chickens before they hatch" and "do not burn your bridges". Adages may be interesting observations, ethical rules, or sceptical comments on life in general.

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