It's a safe bet that the Nobel Prize–winning chemist and peace activist Linus Pauling didn't arrive at all of his good ideas by remaining silent. Chances are very good that there was a lot of talk going on at his Caltech lab as he and his colleagues worked out the problem of electronegativity and its relationship to ionic bonds between atoms. (Talk about academic discourse!) Of course, this didn't occur in an unruly or chaotic environment; the learning goals and social rules of conversations were just as important there as in any classroom. - Douglas Fisher, Nancy Frey and Carol Rothenberg