Is there any philosophical concept or insight all philosophers agree about ?
closed as primarily opinion-based by iphigenie, Hunan Rostomyan, virmaior, Keelan♦, Joseph Weissman♦ Apr 29 '14 at 22:18
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I don't think there is any philosophical claim that all philosophers agree about.
This might look initially like a bad thing, or a sign that philosophy is doomed to irrelevance because nobody can ever agree about anything and nothing gets established.
However, I think this reflects a strength of Philosophy. Philosophers frequently work to offer the best defenses they can think of of interesting claims they identify as not having been defended, or as having not been as well defended as they could be. For instance, if I were to think of a claim about what "truth" means that no philosopher had yet argued for, and some slightly good argument for it, I would probably write a defense of that claim. I am not sure it follows that I believe that claim, but I think it does follow that I don't think the good arguments all go the other way, either.
Then, it follows that if philosophers often do that, as a function of its structure Philosophy avoids agreement. Is that bad? It is not bad if we understand Philosophy not as converging on single correct answers but as mapping out the possible positions one could take, and identifying their strengths and weaknesses. In this way, Philosophy is healthy when philosophers disagree about some claims, and come to agreement about other claims, but even on those topics someone is still trying to think of better reasons to dissent.
I would say yes, that there are positive moral things and that there are negative moral things. However, the problem is the disagreement of what is considered positive or negative in various cultures and ideologies.