The married life of most animals is strictly moral, and most of them are monogamists and have reached the highest form of family association and life.
"The Human Side of Animals"
Royal Dixon
347. But the fire of jealousy is different with natural monogamists, whose love is inflamed not so much against the women as against those who do violence, becoming anger against the latter, and cold against the former: it is otherwise with polygamists, whose fire of jealousy burns also with the rage of revenge: this likewise is one of the reasons why, after the death of polygamists, their concubines and wives are for the most part set free, and are sent to seraglios not guarded, to employ themselves in the various elegant arts proper to women.
"The Delights of Wisdom Pertaining to Conjugial Love"
Emanuel Swedenborg
Since the remainder, consisting of Mahometans, Buddhists, Fire-worshippers, and Idolaters, all practise polygamy more or less, it follows that on this globe of ours, the monogamists constitute one-fourth only of the whole population.
"French and Oriental Love in a Harem"
Mario Uchard