The nature of love is tied to karma in a very deep way. The nature of love is to understand that you are literally every other person in the world and at some point in your sort of conscious experience, you will actually be that person.

Through meditation, I can sort of get a hint of that... I can start feeling how my mind is conjuring up these concepts, and these objects, and these feelings and truly see that—at least see a bit more of—how the nature of everything I experience is fundamentally created by my own consciousness.

Why is there something instead of nothing? That is, to me, the most profound question. Where did this all come from? And why is something existing even the default state of the universe?

One of the best explanations for the nature of reality is it is basically equivalent to consciousness, and as I get deeper into meditation, I feel like that's closer to the answer.

I'd say the nature of reality is how much you can play around with lowering your sensory gating channels and experiencing everything simultaneously while also experiencing nothing.