The Psychology Book (Big Ideas)

A sanguine person has too much blood (sanguis in Latin) and is warm-hearted, cheerful, optimistic, and confident, but can be selfish. A phlegmatic person, suffering from excess phlegm (phlegmatikós in Greek), is quiet, kind, cool, rational, and consistent, but can be slow and shy. The choleric (from the Greek kholé, meaning bile) personality is fie

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