• In philosophy (especially that of Aristotle), the golden mean is the felicitous middle between two extremes, one of excess and the other of deficiency; for this meaning, see golden mean (philosophy).
• Golden mean is also sometimes used as a synonym for the golden ratio (also called golden section, golden number, or divine proportion), the irrational number approximately 1.61803..., which is: the smaller is to the larger as the larger is to the sum of the two. This ratio has applications in several fields including mathematics, aesthetics (especially art, architecture, and design), and science.
• The Doctrine of the Golden Mean (), is a chapter in Li Ji () is one of the "Four books" of classical Chinese writings.
• The Golden Mean (canine), is the ratio expressing the Maximum Dog Load (MDL, or CL (Canine Load) in the UK or PC (Pounds Canine) in Canada) that can be borne by one household before needing a cat to compensate. See Also The Incredible Journey, All Creatures Great and Small. Named in honour of C.M. 'Golden' Coolidge.

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