multiplicity in properties

He who has lifted the veil sees multiplicity in properties, 
not in Essence; hence he knows that changes in properties 
cannot touch Essence, which owns a perfection subject to no mutability. 
Light merely seems to change as it shines through colored glass, but

light has no color.

Its rays shine through the glass

and only then 

do hues and tints appear.

Don't you understand?

Come then into my eyes

and...look!

and you will see

a sun shining

through a thousand bits of glass

beaming to plain sight through each

a ray of color

Why should any difference appear

between this one and that?

All light is one

but colors a thousandfold.

~ Fakhruddin 'Iraqi
from Divine Flashes