Golden mean
WordNet

noun


(1)   The middle between extremes
(2)   The proportional relation between two divisions of line or two dimension of a plane figure such that short : long :: long : (short + long)
WiktionaryText

Noun



  1. A position of precise balance between good and evil.
    • Horace (Odes II - 10)
      Auream quisquis mediocritatem diligit, tutus caret obsoleti sordibus tecti, caret invidenda, sobrius aula. (He who chooses the golden mean safely avoids both the hovel and the palace).
 
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