Cathedra is the tall ornate seat used by the Bishop in giving their pronouncements.

CathedrAI is the modern equivalent, the seat from which AI programs encompassing all human knowledge expound to the masses. Nolens Volens.

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technical details: press "s" to save as a 2400x3600 pixel .png image (or right-click-save)
there are many fine details that might not appear on a particular display. So best to save and display on a high resolution monitor.
The font of the latin saying may appear different on different browsers, but should appear
properly when saved.
Come in red or blue, with a few rare ones in multiple colours. Some are inverted. All are awe-inspiring.
Done completely in vanilla javascript. Program flow is basically: draw a bunch of colored squares and diamonds, then apply repeated displacement mappings, then perform edge detection, then apply multiple mirror/reflection transformations.