The surface meaning of this statement is straightforward: when your thoughts cease, your mental space appears vacant. It suggests that a mind not actively engaged in thinking, planning, or remembering is simply blank.

However, within the Hermetic tradition, this quote points to a crucial distinction. The 'mind' (Nous) is not merely the faculty of discursive thought. True Hermetic practice, as hinted at in texts like the Corpus Hermeticum, aims to transcend the mundane intellect. An 'unoccupied' mind, in this esoteric sense, is one that has ceased its incessant chatter and habitual patterns, but this emptiness is not a void of nothingness. Instead, it is the potential space for divine illumination, for the reception of higher knowledge or gnosis. It is the quietude that allows the divine spark within to be perceived, rather than being drowned out by the noise of the ego's constant activity. The goal is not a vacant mind, but a mind cleared of illusion, ready to apprehend the One.

In your life: When you feel your mind is 'empty' during moments of quiet, recognize this not as a lack, but as an opportunity to observe the subtle presence that underlies thought.