I am looking for someone who wants as badly as I do to see through another person's eyes and to feel the fine-grained texture of their thoughts and emotions, and who is eager to do the tremendous amount of conversational work necessary to explore how far this is possible given the extreme limits inherent in language (not to mention the human lifespan). It can't be merely a passing interest. It should be an all-consuming desire, an endless obsession. I don't expect you to quit your job for this, but I do expect it to be more important than any other activity not directly related to your survival. It has to be something you've thought about nearly every day for years, if not your entire life. That's how important it is to me.
The less we have in common (and I anticipate that we may likely have very little in common besides this) the more effort will be necessary to establish the conceptual baseline for this ongoing conversation. Most important will be a process of carefully defining, restating, or removing preexisting cultural values and assumptions - even shared ones. But this process alone (if you are the one I'm looking for) would be so engaging as to be fun - even joyous - rather than merely a grinding preliminary.
Of course, an insatiable, inexhaustible appetite for deep conversation is necessary, as well as a willingness to be totally honest and unreserved. It may take time to reach the necessary level of trust, but if the desire is there, I believe the trust will follow.
I don't know if you exist. But given the number of people on this planet, it's hard to believe that I'm the only one who wants this as badly as I do. Once again, mere curiosity need not apply - this would be a defining part of your identity. In other words, you shouldn't have to ask yourself, "Could this be me?" You would know it without a doubt.
What I'm talking about may be entirely containable within the umbrella of philosophy - or some combination of philosophy, psychology, and sociology - but it shouldn't be necessary for either one of us to be well-versed in any of these fields. If you are, it shouldn't be a pre-requisite for me to be aware of terminology or references you might employ. Either you would have the patience to teach me - and would enjoy doing so - or you would be inventive enough to find other ways of communicating. I shouldn't need to complete a reading list or have a degree before starting these talks with you. If anything, I consider over-reliance on pre-existing schools of thought and esoteric jargon to be a weakness. We need to be inventing a new philosophy, a new terminology, rather than relying on the inadequate ones of the past.