What is a number? : mathematical concepts and their origins / Robert Tubbs.

Mysticism, number, and geometry : an introduction to Pythagoreanism
The Elgin Marbles and Plato's geometric chemistry
An introduction to infinity
The flat Earth and the spherical sky
Theology, logic, and questions about angels
Time, infinity, and incommensurability
Medieval theories of vision and the discovery of space
The shape of space and the fourth dimension
What is a number?
The dual nature of points and lines
Modern mathematical infinity
Elegance and truth.