In her personal copy of Man And His Future, Esther M. Zimmer Lederberg marked some paragraphs in the chapter written by her then-husband, Joshua. She comments specifically about two paragraphs on page 265, keyed "1" and "2".
The paragraph that is marked with one line, on p. 265, asks, "Surely the same culture that has uniquely acquired the power of global annihilation must generate the largest quota of intellectual and social insight to secure its own survival?" Esther's response: "when the means to alter."
The paragraph that is marked with two lines, on p. 265, asks, "The recent achievements of molecular biology strengthen our eugenic means to achieve this purpose. But do they necessarily support proposals to transfer animal husbandry to man?" Esther's response: "do we want to."