Q: according to this individual, the material world, and its elements, all originate from this. who espoused this view, and of what are they speaking?

A: I believe that is the so called Ent or όν, first introduced by Parmenides (early 5th century). The Ent is the in existence Universal unity, eternal, immovable and immutable. It is the source - main element beneath every else which is changeable (ὄν ἔστι, μὴ ὄν οὐκ ἔστι).