The A B C of Relativity

A guide to a transformed understanding of reality, where space and time are no longer fixed but interwoven.

In The ABC of Relativity, Bertrand Russell presents a clear and accessible introduction to the revolutionary ideas of modern physics, explaining the principles of relativity for a general audience. With characteristic clarity, Russell translates complex scientific concepts into a form that emphasizes understanding over technical detail.

At the heart of the work are the ideas developed by Albert Einstein, particularly the realization that measurements of space and time depend on the observer’s frame of reference. Russell explains how motion, light, and gravity behave under these new principles, reshaping long-held assumptions about the structure of the universe. Concepts such as the relativity of simultaneity, the curvature of space-time, and the relationship between mass and energy are presented in a logical and approachable manner.

The book does not require advanced mathematics, instead focusing on intuition and conceptual clarity. The ABC of Relativity endures as one of the most effective early introductions to Einstein’s ideas, helping readers grasp how profoundly our understanding of reality has changed.

This Carlini Classics edition presents the complete, unabridged text in a beautifully designed format made to last.

• An accessible introduction to the principles of relativity
• A clear explanation of Einstein’s revolutionary ideas
• A timeless reflection on space, time, and the nature of reality

Available in multiple formats:

• Paperback & Hardcover: Beautifully designed print editions presenting the complete, unabridged text made to last.

• Ebook: DRM-free EPUB compatible with Kindle, Kobo, Apple Books, and all major e-readers.

• Audiobook: Professionally narrated, complete and unabridged, available on all major audiobook platforms.

Elegantly produced and enduring in form, this edition preserves Russell’s clarity in a volume designed for lasting understanding.

About the author

Bertrand Russell (1872–1970) was a British philosopher, logician, and social critic whose profound contributions to mathematics, philosophy, and science earned him the Nobel Prize in Literature in 1950. Renowned for his ability to make complex ideas accessible, Russell remains one of the most celebrated intellectuals of the 20th century.