Definitions: (1) free from agitation, excitement, or disturbance <a calm demeanor>; at rest; (2) in possession of a quiet psyche; tranquil

Synonyms: peaceful, placid, phlegmatic, placid, serene, still-minded, stolid

Saying: Aequam servare mentem (Latin): “preserve a calm mind”

Idiom: Calm, cool, and collected

Quote: True love is not a strong, fiery, impetuous passion. It is, on the contrary, an element calm and deep. It looks beyond mere externals, and is attracted by qualities alone. It is wise and discriminating, and its devotion is real and abiding. — Ellen Gould White (1827–1915) American co-founder of the Seventh-day Adventist Church

Comment:  Seek a set of qualities which will result in a balanced and symmetrical personality. Try to be just but nonetheless fair; firm but not obstinate; calm but not to the point of being indifferent; helpfully sympathetic but never meddlesome or dictatorial; strong but at the same time gentle; courageous but never rash or foolhardy; humorous and playful, but only when appropriate.