On one hand, it may be seen as the most original, yet it was left as the least developed of the three. Because early Quakers were hardly methodical in their usage of imagery, these concepts can be seen evolving and mutating over time, even within the writing of a single Friend. Combined with the widespread and frenzied activity of the early Quaker movement, as well as inhibitions in the face of the Blasphemy Act, the resulting literature can often blur any distinctions between Light and Truth or Light and Seed, so that they will at times appear synonymous, while at other times quite discrete. Often, the Seed is presented as identical to the Light or to Christ. Sometimes, it might appear to be Jesus. Yet it can also be envisioned as the individual response to the Light – that is, what the Psalms call “soul.” It might even be considered as that image of God in which each person is created.
Considering today’s emphasis on individuality, plurality, and personal psychology, I believe that returning to the metaphor of the Seed holds the most potential for fertile spiritual development and guidance in our own era.
The concept of Seed as a personal place of response might be imagined as a natural outgrowth in relation to the early Quaker proclamation of a holy inward Light available to all. Their difficulty in advancing the idea arises, I suspect, in the fact that “seed,” as such, has far fewer Biblical citations than the corresponding complementary “light” or “true” and “truth” do. Much of the early Friends’ mindset and practice relied on the ability of individuals to connect a Quaker expression to related Biblical texts. In many references in the Hebrew Bible, however, “seed” is the name for semen (which, in turn, is the Latin word for seed); here, seed is often applied to human ancestry and lineage while lacking any apparent appreciation for what we now know as the work of the fertilized egg within a woman, or, for that matter, pollen in plants. This perspective has little apparent connection with light, and does little to stabilize the dynamic of light and seed.
As Light Is Sown 
I’ve never connected ‘seed’ with The Light , or God , or Jesus . Spiritually Seed would mean potential to me . I’ve long been interested in Quakerism , am an Attendee of an unprogramed meeting for going into 2 years. It seems so natural to me . No business , books , paper shuffling , up and downs , but pure . Silent Worship.
And thus we grow into the Light, no?
Yes, Jnana . As
a seed covered in soil moves toward the Light .
I read this earlier today, and then found this poem by Rumi, and thought perhaps it related…
There is a path from me to you
that I am constantly looking for,
so I try to keep clear and still
as water does with the moon.
This moment this love comes to rest in me,
many beings in one being.
In one wheat grain a thousand sheaf stacks.
Inside the needle’s eye, a turning night of stars.
Lovely and, yes, befitting.