The Razor's Edge . . .

I have been reading this book off and on this summer based on a recommendation that someone gave me, and I can honestly say that I have no idea what the point of this book is. I'm almost finished with it, and I like it enough to keep reading until the end, but I have no idea whether it will make sense to me or whether it will leave me disappointed and frustrated enough to never pick up another Somerset Maugham book again.