You've hit on another fascinating aspect, that secular enlightenment Freemason magic, knowledge of mathematics and engineering and materials is hidden in them. The church contains it's antagonist. Very dialectical in this sense. The Freemasons claim Wren as one of their own.
Proust has hit upon something I've mentioned before, not to say he necessarily plagiarised me, but that the steeple is two hands met in prayer.
This is a symbol of duality and unity, the two forces equal and balanced in energised opposition. /\ like so.
Again a Masonic, engineering principle as well as a spiritual cosmic principle.