What is meant by "looking with the eyes raised high"?

The five aggregates, the eighteen realms, and the twelve sense bases all arise from the convergence of various conditions; when the conditions disperse, they vanish. Therefore, they are unreal and illusory, without self. How is this principle to be realized and internalized? The mind consciousness can think it over and gain a rough understanding, yet one knows clearly in one's own heart that this is not true understanding—one knows that it is so but not why it is so—and one still needs to continue toward a deep and definite clarity. This requires that, within meditative concentration (samādhi), one suspend this principle in the mind and let the manas deliberate upon it. The manas's deliberation does not adhere to sense objects; it maintains a certain elevation, which is called "viewing from a high vantage point," and is also called "deep and subtle investigation."