If HPB's commentary to verse nine of the first stanza is read carefully, it will be seen that the subject matter of the whole stanza, clearly, is not altogether the creation of the universe in the conventional sense, as every single commentary on the Secret Doctrine takes for granted. This is not Nirvana, but a condition next to it. Thought cannot conceive or formulate to itself the nature of space. Whatever it formulates has within it the limitation of its own boundaries. This is not the space which meditation comes upon.
Thought has always a horizon.
The meditative mind has no horizon. The mind cannot go from the limited to the immense, nor can it transform the limited into the limitless. The one has to cease for the other to be. Meditation is opening the door into spaciousness which cannot be imagined or speculated upon. Thought is the center round which there is the space of idea, and this space can be expanded by further ideas.