"[T]he 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 unravelling of the view might begin, the unprobed assumptions he feels uneasy about...
No philosopher says: There’s where I started, here’s where I ended up; the major weakness in my work is that I went from there to here; in particular, here are the most notable distortions, pushings, shovings, maulings, gougings, stretchings, and chippings that I committed during the trip; not to mention the things thrown away and ignored, and all those avertings of the gaze.
The reticence of philosophers about the weaknesses they perceive in their own views is not, I think, simply a question of philosophical honesty and integrity, though it is that or at least becomes that when brought to consciousness. The reticence is connected with philosophers’ purposes in formulating views. Why do they strive to force everything into that one fixed perimeter? Why not another perimeter, or, more radically, why not leave things where they are? What does having everything within a perimeter do for us? Why do we want it so? (What does it shield us from?) From these deep (and frightening) questions, I hope not to be able to manage to avert my gaze in future work."
Robert Nozick Anarchy State and Utopia
h/t Andrew Sullivan