But in spirituality, in contrast to corporeality, infinity is considered a filling not restricted in any way. If the glass is filled to the brim, it means that there is infinity inside it, even if it is only 200 grams in size.
The vessel does not limit its reception of the Light; that is, it does not indicate to what extent it agrees to receive, and not more beyond that. Therefore, both small and large vessels can contain infinite filling if they do not limit the Light, but receive everything they can fit into them.
There may be a small vessel in a state of infinity, and another, more than a million times bigger, will be limited. After all, everything is evaluated relative to the vessel; if it does not place a limit on the reception of the Light, then it is limitless.
There may be only ten grams of desire in you, but you do not limit the filling. Hence, you are in Infinity and your feelings are unlimited. Or perhaps, instead of ten grams your desire has grown to ten tons, but you cannot receive more than half of it. It turns out that the ten grams is the infinite filling, and the five tons is a limited one. Everything is evaluated with respect to the person who attains.
From the 2nd part of the Daily Kabbalah Lesson 3/4/18, Talmud Eser Sefirot