Continuing the article of Mr. Blunt from which I have already
quoted, I read :-

"Linus, in a passage which has been preserved by Stobaeus,
exactly expresses the notion afterwards adopted by Spinoza: 'One
sole energy governs all things; all things are unity, and each
portion is All; for of one integer all things were born; in the
end of time all things shall again become unity; the unity of
multiplicity.' Orpheus, his disciple, taught no other doctrine."

According to Pythagoras, "an adept in the Orphic philosophy,"
"the soul of the world is the Divine energy which interpenetrates
every portion of the mass, and the soul of man is an efflux of
that energy. The world, too, is an exact impress of the Eternal
Idea, which is the mind of God." John Scotus Erigena taught that
"all is God and God is all." William of Champeaux, again, two
hundred years later, maintained that "all individuality is one in
substance, and varies only in its non-essential accidents and
transient properties." Amalric of Bena and David of Dinant
followed the theory out "into a thoroughgoing Pantheism."
Amalric held that "All is God and God is all. The Creator and the
creature are one Being. Ideas are at once creative and created,
subjective and objective. God is the end of all, and all return
to Him. As every variety of humanity forms one manhood, so the
world contains individual forms of one eternal essence." David
of Dinant only varied upon this by "imagining a corporeal unity.
Although body, soul, and eternal substance are three, these three
are one and the same being."