For me, if not for others, a perfect definition of love, by a 12th century troubadour.  The image, of wall art in Lisbon, struck me as a perfect illustration.

For as all true lovers

Know, love is perfect kindness.

Source: Guiraut de Borneilh (c. 1138-1215), quoted in John Rutherford, The Troubadours (London: Smith, Elder & Co., 1861), pp. 34-35

Photo credit: Annie Spratt at unsplash