The principles of the Four Noble Truths, we are all familiar with, but the application of the principles lie within the integrated understanding of the Four Foundations.

The second foundation begins to dissolve the form of "I' and the body/mind begins to slowly lose its boundaries revealing the formless.

The Buddha seems to be suggesting to advance ourselves as little as possible in the Third Foundation. When we see what is arising minimally as "just this," we are essentially taking ourselves out of that seeing.

The Buddha removes the self from consideration by remembering each mind state, simple as it is.

The four foundations move us from form to formless but also give us a view and appreciation to make the journey