“Too many songs have been written about love already, you know? Subject's covered.”

Source: Sandman Slim

Academy of Achievement interview (1991)

Homage to Catalonia (1938)

Usenet

In the self-interview on Stop Making Sense

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
Context: 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.

Source: A Room of One's Own (1929), Ch. 2, p. 26

Source: Lothaire

Henry Darger (1892-1973) was the author and illustrator of what could possibly be the longest unfinished fictional work of all time. His towering hand-bound manuscript of 17,000 pages was found in this obscure retired hospital janitor’s apartment after his death. Henry worked in obsessed isolation for six decades on his saga entitled, The Story of the Vivian Girls, in What is Known as the Realms of the Unreal, of the Glandeco-Angelinian War Storm, Caused by the Child Slave Rebellion.
Quotes from NatalieMerchant.com