  A different sort of challenge to the claim that the Buddha valued philosophical rationality for its own sake comes from the role played by authority in Buddhist soteriology. For instance, in the Buddhist tradition one sometimes encounters the claim that only enlightened persons such as the Buddha can know all the details of karmic causation. And to the extent that the moral rules are thought to be determined by the details of karmic causation, this might be taken to mean that our knowledge of the moral rules is dependent on the authority of the Buddha. Again, the subsequent development of Buddhist philosophy seems to have been constrained by the need to make theory compatible with certain key claims of the Buddha. For instance, one school developed an elaborate form of four-dimensionalism, not because of any deep dissatisfaction with presentism, but because they believed the non-existence of the past and the future to be incompatible with the Buddha’s alleged ability to cognize past and future events. And some modern scholars go so far as to wonder whether non-self functions as anything more than a sort of linguistic taboo against the use of words like ‘I’ and ‘self’ in the Buddhist tradition (Collins 1982: 183). The suggestion is that just as in some other religious traditions the views of the founder or the statements of scripture trump all other considerations, including any views arrived at through the free exercise of rational inquiry, so in Buddhism as well there can be at best only a highly constrained arena for the deployment of philosophical rationality.