Bayan nasarar Paranoid, an ba wa ƙungiyar ƙarin lokacin studio, tare da "akwatin cike da kuɗi" don siyan ƙwayoyi. "Mun shiga cikin coke, babban lokaci", in ji Ward. "Uppers, downers, Quaaludes, duk abin da kuke so. Ya kai ga matakin da kuka zo da ra'ayoyi kuma ku manta da su, saboda kun kasance kawai daga gare ta. "An kammala samarwa a watan Afrilu na 1971, a watan Yuli, ƙungiyar ta fito da Master of Reality, watanni shida bayan fitowar Paranoid a Amurka. Kundin ya kai saman goma a Amurka da Ingila, kuma an tabbatar da shi a cikin ƙasa da watanni biyu, daga ƙarshe ya sami takardar shaidar Platinum a cikin 1980s da Double Platinum a farkon karni na 21", in ji Ward. "A cikin littafin Rolling Stone na shekara ta 2003, an ba da amsa mai sauƙi tare da jerin sunayen masu son murmushi kamar yadda aka bayar da shi tare da "Children's Grave, Child's Grave" da kuma "What's Your Favorite Number?" a cikin Rolling Stone, "A cikin jerin sunayen masu son murmushi na farko na karni na 21",
ƙwayoyi