Ethics
Spinoza
Gravitation, Gauge Theories And Differential Geometry
Eguchi, Gikey & Hansen
Theory and Calculations of Electrical Circuits
Charles Proteus Steinmetz
Periphyseon: Division of Nature
Johannes Scotus Erigena
Euclid's Elements of Geometry
Richard Fitzpatrick, University of Texas at Austin
Einstein Manifolds
Arthur L. Besse
How to Solve It: A New Aspect of Mathematical Method
George Polya
New Foundations for Classical Mechanics
D. Hestenes