. . .the usual manner of presenting philosophical work puzzles me. Works of philosophy are written as though their authors believe them to be the absolutely final word on their subject. But it’s not, surely, that each philosopher thinks that he finally, thank God, has found the truth and built an impregnable fortress around it. We are all actually much more modest than that. For good reason. Having thought long and hard about the view he proposes, a philosopher has a reasonably good idea about its weak points; the places where great intellectual weight is placed upon something perhaps too fragile to bear it, the places where the unraveling of the view might begin, the unprobed assumptions he feels uneasy about.