Do we have notions of "atoms" impressed on our minds even though we have never seen them?
As we know, atoms are not visible in any way because, unlike every other object, atoms cannot give off images. Atoms do not flow off of the bodies of other atoms, but atoms do flow off every other object.
Do we have notions of "justice" impressed on our minds even though justice is an abstract concept which cannot be seen in bodily form?
The physical basis for justice is simply the fact that life is a potential characteristic [sýmptōma] of matter -- and justice is a potential characteristic of life.