Ma`rifat Falsafi

Since the principle of non-contradiction is highly important, it can be assessed from different perspectives ranging particularly from epistemology to philosophy and logic .Considering that the epistemological, philosophical and logical aspects of this principle are very closely interrelated one cannot draw a definite line of difference between them .However assuming that some of the discussions concerning the principle of non-contradiction are simply related to some of its aspects mentioned above, paying attention to the difference they have from each other, will be a key to understanding its implications .Taking into account its epistemological, philosophical and logical aspects, the paper tries to review the elaborations made on this principle and its implications .