Lord Alfred's father, the Marquess of Queensberry, was known for his outspoken atheism, brutish manner and creation of the modern rules of boxing. Queensberry, who feuded regularly with his son, confronted Wilde and Lord Alfred about the nature of their relationship several times, but Wilde was able to mollify him. In June 1894, he called on Wilde at 16 Tite Street, without an appointment, and clarified his stance: "I do not say that you are it, but you look it, and pose at it, which is just as bad. And if I catch you and my son again in any public restaurant I will thrash you" to which Wilde responded: "I don't know what the Queensberry rules are, but the Oscar Wilde rule is to shoot on sight". His account in "De Profundis" was less triumphant: "It was when, in my library at Tite Street, waving his small hands in the air in epileptic fury, your father... stood uttering every foul word his foul mind could think of, and screaming the loathsome threats he afterwards with such cunning carried out". Queensberry only described the scene once, saying Wilde had "shown him the white feather", meaning he had acted in a cowardly way. Though trying to remain calm, Wilde saw that he was becoming ensnared in a brutal family quarrel. He did not wish to bear Queensberry's insults, but he knew to confront him could lead to disaster were his liaisons disclosed publicly.