Sanus Animo

Is a Latin phrase meaning "sound in mind" or "healthy in spirit/mind," with "sanus" translating to sound/healthy and "animo" as the ablative form of "animus" (mind or spirit).

It often appears in historical and legal Latin texts, particularly in wills or declarations to affirm the testator's mental competence, similar to the English "of sound mind."

For example, it's commonly paired as "sanus animo et corpore" (sound in mind and body), echoing the structure of the famous proverb "mens sana in corpore sano" from Juvenal, which you mentioned earlier. This phrasing underscores a state of mental clarity and readiness, as seen in medieval documents or religious contexts where individuals declare their fitness before making important decisions. If this is a reference to something specific, like a title or quote, it doesn't appear prominently in modern searches beyond these classical usages.