An authoritative early exposition of relativity theory, this reader-friendly book describes the physical doctrines of the special and general theories of relativity in terms of their philosophic significance. A clear, nonmathematical introduction to a complex subject, this book offers readers of all backgrounds a coherent and informative overview. 1920 edition. Unabridged republication of the third edition, published by Oxford University Press, 1920.
Here's a sample of other books in this Dover category
The Metaphysical Foundations of Modern Science by E. A. Burtt Classic in the philosophy of science offers a fascinating analysis of the works of Copernicus, Kepler, Galileo, Descartes, Hobbes, Gilbert, Boyle, and Newton, tracing their influence on contemporary scientific thought.
Einstein's Legacy: The Unity of Space and Time by Julian Schwinger A Nobel Laureate relates the fascinating story of Einstein and relativity theory in well-illustrated, nontechnical terms, discussing the meaning of time, gravity and its effect on light, the curving of space-time, more.