A Brief History "Reason alone can never be a motive to any action of the will… it can never oppose passion in the direction of the will… The reason is, and ought to be, the slave of the passions, and can never pretend to any other office than to serve and obey them" These words were written by David Hume's A Treatise of Human Nature in 1773.[1] We have had philosophical systems that put the wills or the motive forces in their rightful place in the hierarchy of action choices for a long time. The idea being that there's a process outside rationality making selections based on the reality the personality inhabits that are evolutionarily benefiting the human animal. I intend to argue that emotions are not a separate phenomenon from rational thought, but are instead a core functional component for assembling the rational universe. I Feel Therefor I Am Everything we humans care about. Everything we notice. Everything in the rational human universe exists because at some point in time a human had a feeling about it enough to care about it and turn it into part of their shared existence with other human beings. The Emotional Machine I had set myself the goal of building an artificial general intelligence based in part on Marvin Minsky's emotion machine. I tried working out what it would take to model what I knew about emotions as a biologist and trying out functional abstractions for them as a computer scientist. I had both personal and educational exposure to psychological concepts so I began with the discrete emotions and tried imagining what each might look like as a function. Here is an entire article on the various models people have tried before. While looking into the possibility, I ran across the continuous emotional model (figure 1 [2]) and after staring at that for a while, realized I was looking at a four dimensional space. (figure 2) figure 1 : The discrete emotions mapped as dyads of every emotion with the exception of its polar opposite.figure 2 :