— Harry Harlow
originally published in "The Nature of Love" https://books.google.ca/books?id=e10mee-djCUC&pg=PA673&lpg=PA673&dq=The+little+we+know+about+love+does+not+transcend+simple+observation&source=bl&ots=p1ez0bTQib&sig=BH1fmd9ZXLJ3h3pDHwIFdchsnnU&hl=en&sa=X&ved=0ahUKEwj04cSaxsTQAhXLx1QKHQ9bAgoQ6AEIJjAB#v=onepage&q=The%20little%20we%20know%20about%20love%20does%20not%20transcend%20simple%20observation&f=false, American Psychologist, volume 13, number 12, December 1958
Contexto: Love is a wondrous state, deep, tender, and rewarding. Because of its intimate and personal nature it is regarded by some as an improper topic for experimental research. But, whatever our personal feelings may be, our assigned missions as psychologists is to analyze all facets of human and animal behavior into their component variables. So far as love or affection is concerned, psychologists have failed in this mission. The little we know about love does not transcend simple observation, and the little we write about it has been written better by poets and novelists.