This is a university/school seal for a fictitious academic institute in a science fiction novel series (Terra Ignota). The fictitious institute studies psychology and does psycho-profiling, fitting people into complicated categories and predicting human behavior. It should look like a very traditional university seal, black and white, circular or in a shield, with imagery which invokes the mind or ideas or depth or human understanding and advancing the human species. The Latin motto means "the base/source/bottom and the foundation/origin" both referring to the human brain/mind/psyche. The institute is associated with a group cold "Gordian" whose logo is the Gordian knot, but the institute's seal is older than that association so wouldn't be based on it necessarily.
For reference I have uploaded images of the flags of the various fictitious future nations of this science fiction world (the EU flag, of course, is not fictitious). It will be best if the imagery in the institute seal isn't too similar to the imagery in any of the flags, with the exception of the red flag with the knot which is the flag of the nation associated with the institute. Thus images it's probably wise to avoid include hands, stars, diamonds, rockets, circles/planets, also the sun which is a symbol of a rival faction.
Imagery that might be good: tree, plant, water, pool, water spring or fountain, well, things which invoke root/source/origin