http://revach.net/article.php?id=5334

Section:  Avodah   Category: Olam HaTorah
Parshas Trumah: Rav Moshe Feinstein - Make Yourself Big, but don't Take up Space

Chazal tell us (Yuma 21a) that the Aron HaKodesh took up no space in the Kodesh HaKedashim. If you measured from each side of the Aron to the wall, you would get the total of the entire area, with no space left for the area the Aron sat on. This was a great Nes.

Rav Moshe Feinstein in Darash Moshe asks, if the Aron which held the Luchos took no space then certainly the Luchos themselves should warrant such a miracle and take no space. Yet the Gemara in Bava Basra (14a) tells us specifically that the Luchos filled up the entire space inside the Aron.

We learn from here, says Rav Moshe, a very important lesson. A person must be like the Aron Kodesh. He must fill up his entire being with Torah. If he leaves any part of himself lacking Torah and does not learn the Torah in its entirety, then he will be "missing something" and will be rendered incomplete.

However after he has filled himself with Torah he needs to act with total modesty. He needs to take the major heft that he has imbued himself with, and act as if he takes up no space. And on the flip side he must also realize that the precious Torah he has filled himself with, is "Kulo Ruchni" pure spirituality, and stands above any boundaries and space in this world.