Emptiness and Form of The Four Noble Truths & the Eightfold Path

An interesting discussion of emptiness and form in the context of the, well, you can read. Also of interest on the ever interesting subject of form and emptiness there's this poem, which reminds us that "Nothing is permanent / This is what we call emptiness". For a more academic approach, there's Sinicizing Buddhist concepts: emptiness, which says "Emptiness is neither the origin nor terminus for forms; forms themselves at any moment are emptiness." For those who like a little text/graphic/coolness with their emptiness, there's 1-1=0=1-1.
And hey, don't forget:

Form is emptiness; emptiness also is form.
Emptiness is no other than form;
form is no other than emptiness.
In the same way, feeling, perception, formation, and
Consciousness are emptiness. Thus, Shariputra,
All dharmas are emptiness.
There are no characteristics.
There is no birth and no cessation.
There is no impurity and no purity.
There is no decrease and no increase.