Several authors, including the sociologist Murray S, Davis, the philosophers Roger Scruton and Maxine Sheets-Johnstone, and the physician Frank Gonzalez-Crussi, have praised Sartre for his contributions to the philosophy of sex. Davis credited Sartre with being the first author to present a phenomenological analysis of sex. Scruton credited Sartre with providing "perhaps the most acute philosophical analysis" of sexual desire and correctly arguing that treating sexual desire as equivalent to appetite ignores "the interpersonal component of human sexual responses." He described Sartre's reflections on "le visqueux" as "celebrated". He has also credited Sartre with providing a "stunning apology for sado-masochism", and characterized "Being and Nothingness" as a "great work of post-Christian theology". Gonzalez-Crussi credited Sartre with recognizing that it is incorrect to equate sexual desire with desire for sexual acts. Sheets-Johnstone believed Sartre presented a subtle analysis of human sexuality. She praised his understanding of desire in general and suggested that his views about the subject anticipated those of the philosopher Michel Foucault. She believed that his views contained both significant truth and internal contradictions. She suggested that despite his criticism of Freud, his views about women and female sexuality were in some ways similar to Freud's. Naomi Greene, arguing that there is a "distaste for sexuality" in Sartre's work, identifies a clear "anti-sexual bias" present in "Being and Nothingness".