Why do some of us constantly pursue knowledge? Probably because attaining it, or part of it if you want to get technical, is a satisfaction in itself. Are we not, then, pursuing knowledge for the sole purpose of satisfying ourselves? We can say that the knowledge we obtain and share might be useful for others, making the pursuit ultimately selfless, but the question is not there; at the individual level, I suspect that only few of the people who pursue knowledge do it to serve anyone or anything other than themselves. I'd like to learn about your views on the question.