Pi is a film about the interconnected nature of everything. We watch as the protagonist, Max stumbles across a sequence of numbers that ultimately is a divine sequence which will allow wall street investors to predict the stock market, and the Jewish priests to inherit the keys to Heaven. Aronofsky's film has us journey with Max from a isolated man solely in search of cracking the stock market in order to do good in the world. In his isolation though he cannot go any further, and we watch as he must risk exposes more and more of himself which connects him to the world around him and provides the opportunity for answers to the problems that he is facing in his research.
But the more connected he chooses to be the more danger he is put it as false friendships are formed, and Max must begin to actively make moral decisions over and over and there is a demand for his belief in whether there is a God to be put to the test. In the end, we watch as Max puts a drill to his head because what he has learned is far too much for him to handle on a day to day basis. The knowledge of our connectedness to one another and to nature and God becomes a knowledge that he doesn't know how to manage as all of his beliefs are turned upside down. Aronofsky shows how our desire to get something out of this connection can ultimately become our destruction, thus there is a call that demands the understanding of how to exist with this great power of connection without striving. Most importantly Aronofsky is showing that if all we have to process our belief is our minds that it will never be capable of handling the immense nature of what's possible as there must be a connection to the heart as well.