“In reading any important philosopher, but most of all in reading Aristotle, it is necessary to study him in two ways; with reference to his predecessors, and with reference to his successors. In the former aspect, Aristotle's merits are enormous; in the latter, his demerits are equally enormous. For his demerits, however, his successors are more responsible than he is. He came at the end of the creative period of Greek thought, and after his death it was two thousand years before the world produced any philosopher who would be regarded as approximately his equal. Towards the end of this long period his authority had become almost as unquestioned as the Church, and in science, as well as in philosophy, had become a serious obstacle to progress. Ever since the beginning of the seventeenth century, almost every serious intellectual advance had to begin with an attack on some Aristotelian doctrine; in logic, this is still true at the present day. But it would have been at least as disastrous if any of his predecessors (except perhaps Democritus) had acquired equal authority.” PhilosophyLogicAristotleAristotelian Book:A History of Western Philosophy Source: A History of Western Philosophy