Foundationalism has had a really rough time in the last few centuries. Starting with Thomas Reid‘s attacks on ‘the way of ideas’, finding perhaps their most sophisticated articulations in Sellars and his attack on the ‘myth of the given’ (both Reid and Sellars are concerned with the foundations of empirical knowledge here) and continuing with Rorty and his attack on the ‘mirror of nature’, powerful arguments have been leveled at what has been, according to the received wisdom, the reigning theory of knowledge for most of history. Alvin Plantinga has rather famously given classical foundationalism a final kick. Now, a perusal of these links will show that foundationalism is indeed a many splendored thing: there are epistemic and metaphysical articulations to be found, ranging from Descartes to the British empiricists to Russell, but the overall moral is this: the idea that knowledge requires foundations (of any of the kinds listed above) in order to be rational is at the very least open to serious doubt. Now, the fact that foundationalism is in doubt doesn’t negate the idea that knowledge may have foundations more generally. Plantinga is a good case study here, since while he objects to classical foundationalism he is still a sort-of, or a modest, foundationalist. It may be more helpful to put it this way: while the requirement for foundations for knowledge to be rational may be called into question, the question of grounds for knowledge is still alive and well. Continue reading
The fundamental disagreement between Aquinas and Anselm, IMO, occurs in the SCG, where Aquinas says that
‘No difficulty, consequently, befalls anyone who posits that God does not exist. For that something greater can be thought than anything given in reality or in the intellect is a difficulty only to him who admits that there is something than which a greater cannot be thought in reality.’
Obviously, this is in direct conflict with Anselm’s invocation of the Fool, but to me it also shows that the Ontological Argument is more logical than metaphysical. Anselm is basically interpreting negative existentials as being both about something ‘in the understanding’ that does not exist in reality: Anselm is trying to derive a logical contradiction or absurdity here. In other words, Anselm is trying to show that ‘There is no God’ or ‘God doesn’t exist’ is a contradiction. But this is easily avoided if we employ something like Russell theory of definite descriptions: we can say that ‘God’ = ‘something than which nothing greater can be conceived’. The fool can be taken to be saying that ‘there is nothing which fits the description ‘‘something than which nothing greater can be conceived’. To avoid the contradiction, all we have to do is translate that to ‘For any given thing, in the understanding or in reality, a greater than it can be conceived’, and, since Anselm’s argument doesn’t require the Fool to know that his statement is true but only to state it without contradiction, we have avoided Anselm’s contradiction. Aquinas’s quote above is basically the same as what I just laid out.
Perhaps no more familiar conflict exists in the wide world of theology than Barth’s conflict with natural theology. Summarized by the title of his (in)famous reply to Emil Brunner, this has often been taken as a conversation-stopper. And yet, as is so often the case with familiar stories, there is, in fact, more to the story. While Barth never swayed from his negative instincts towards natural theology, it is exceedingly important to pinpoint exactly what he felt and exactly what he felt that about. Torrance went a long way towards clarifying what Barth mean in his rejection of natural theology though himself was somewhat inconsistent in his own positive articulation of the doctrine; however, both give pride of place to the doctrine of justification by faith alone. Torrance fleshes out a good deal of all this in his essay on the Scots Confession, and makes a few key moves that are absolutely crucial to both his and Barth’s thinking on this subject. Continue reading