I have developed an interest in mathematics rather late in life since I am about finished with my professional education. I realize that it is too late for me to make a career out of mathematics, so it will probably remain a recreational or aesthetic activity. I'm wanting suggestions on how to make the most out of my mathematical studies. I've recently been studying mainly algebra and calculus, which is interesting enough, but most of the material I have been reading is mainly concerned with the mundane and procedural aspects. I'm wanting to understand mathematics more conceptually. I believe the ability to understand and develop mathematical proofs is a very important practice, but I don't seem to understand the assumptions and philosophy behind proofs. I feel rather confused and I'm beginning to wonder if mathematics is really something that would continue to interest me.