Inner beauty

Inner beauty is a concept used to describe the positive aspects of something that is not physically observable.
While most species use physical traits and pheromones to attract mates, some humans claim to rely on the inner beauty of their choices. Qualities including kindness, sensitivity, tenderness or compassion, creativity and intelligence have been said to be desirable since antiquity. However new research comparing what humans claim to find attractive to their actual mating habits underlines the superficiality of "inner beauty," underlining the fact that the human animal relies on physical traits and pheromones just like every other animal to find a mate. That said, whether "inner beauty" does or does not measurably affect humans' mating habits, some traits classified as "inner beauty" do give an evolutionary survival advantage to either the individual or mating couple or group or all three.