I have been taking real analysis II this semester and I am starting to get a better grasp over the broad subject of analysis and integration. However, I feel like my understanding is completely problem-oriented. I tried talking to a colleague of mine about real analysis in a conceptual manner and we couldn't talk for more than just a few minutes. I do have some basic understanding, for example: integration is clearly something similar to the measure of size, or something of that nature. However, I am curious about a more extensive, conceptual discussion of the subject which just focuses on the intuition, motivation, and interpretations of the results. Does anyone know a good book or good resource where I can approach this?