Comradeship is obvious and universal and open; but it is only one kind of affection; it has characteristics that would destroy any other kind. Anyone who has known true comradeship in a club or in a regiment, knows that it is impersonal.
Gradually it has become clear to me what every great philosophy so far has been: namely, the personal confession of its author and a kind of involuntary and unconscious memoir.
Our characterization of collective folly is that sound judgment is not feasible when there is forced or false agreement in groups. We also show how group polarization sets the stage for risky and even dangerous decisions to be made. How we navigate between false agreement and polarization is the kind of mastery that collective wisdom represents.