"'Zipperstein has done, in this study, something usually relegated to the domain of novelists: by celebrating the insecurities, the brilliance... of an individual, he has brought us a little closer to understanding what it means to be human.' (Jewish Quarterly) 'Isaac Rosenfeld... was many things to many people, but no one would say he wasn't bright. If anything bound the many threads of his dissolute life, incisively recounted in Steven Zipperstein's biography Rosenfeld's Lives, it was his intellect, his supreme conviction from childhood onward that what made life worth living was the thought that went into it.' (Dara Horn, The Jewish Review of Books)"