What does 'de omni scibili et de quolibet ente' mean?

More accurately: de omni scibili et de quolibet ente

To dispute with any person in any science.

The link also gives the context in which it was first used. Seems a trifle obscure. Perhaps the professor was in his cups!

http://books.google.com/books?id=bIYgAAAAMAAJ&pg=PA292&lpg=PA292&dq=de+omni+scibili+et+de+quolibet+ente+translation&source=bl&ots=pfivGxoaVk&sig=BXaU7U0O5-AjQaOrI54jm-8EIuA&hl=en&sa=X&oi=book_result&resnum=4&ct=result

De Omni Re Scibili means "from every knowable thing."

Quodlibet or Quod libet is Latin for "whatever you please" or "whatever you want."

https://en.wikipedia.org/wiki/Escuela_Nacional_de_Inteligencia

http://code.google.com/p/quodlibet/wiki/FAQ#What_does_the_name_mean?

de omni re scibili ("of all things that can be known") was the motto of pompous young lad and famous Italian philosopher Pico della Mirandola who thought this was a fitting description of his encyclopedic knowledge.

http://everything2.com/?node_id=1478364