Images one,four and five:
Benin Olokun igha-ede symbols from Norma Rosen, " Chalk Iconography in Olokun Worship", African Arts, Vol. 22, No. 3 (May, 1989), pp. 44-53+88:
http://www.jstor.org/stable/3336778.
Image two:
"Cartesian coordinate system with the circle of radius 2 centered at the origin marked in red. The equation of the circle is x2 + y2 = 4." from" Cartesian Coordinate" at Wikipedia:
http://www.floatingorigin.com/mirror/Cartesian_coordinate.htm
Image three:
"A right-handed three-dimensional Cartesian coordinate system with the +z axis pointing towards the viewer" by Sakurambo from "3D coordinate system" at Wikimedia:
http://commons.wikimedia.org/wiki/File:3D_coordinate_system.svg
In italics:quotations from
1. Wole Soyinka,
The Man Died: Prison Notes of Wole Soyinka. London:Rex Collins,1976.258.
2.William Chittick,
The Self Disclosure of God: Principles of al-Ibn Arabi's Cosmology.New York:State University of New York Press,1998.xii.
3.Karl Rahner,
Foundations of Christian Faith:An Introduction to the Idea of Christianity. London:Darton Longman and Todd,1978.22.
4.Para 13.From "explained" to end of italics: Isaac Newton,
The Mathematical Principles of Natural Philosophy in
On the Shoulders of Giants: The Great Works of Physics and Astronomy. ed Stephen Hawking.Philadelphia:Running Press,2002.