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Oh, what a delightful book! This is the clearest explanation of relativity availableand the most fun. Its great to have it available again. Whether or not youre a scientist, you will relish this book.Walter Isaacson, author of Einstein: His Life and Universe

Using just enough mathematics to help and not to hinder the lay reader, Lillian R. Lieber provides a thorough explanation of Albert Einsteins theory of relativity. Her delightful style, in combination with her husbands charming illustrations, makes for an interesting and accessible read about one of the most celebrated ideas of all times.

A clear and vivid exposition of the essential ideas and methods of the theory of relativitycan be warmly recommended especially to those who cannot spend too much time on the subject.Albert Einstein

If you know high-school math, are not afraid of equations, and want to find out what Einstein really said, read Lillian Liebers book. She will lead you through special and general relativity, helping you at every step to understand the essential equations, including tensors, with amazing clarity and conciseness. This uniquely charming book remains as vivid as ever and even more helpful, thanks to the excellent new foreward and notes by David Derbes and Robert Jantzen.Peter Pesic, author of Abels Proof: An Essay on the Sources and Meaning of Mathematical Unsolvability and Sky in a Bottle

Does the nature of time fascinate you? Does gravity seem a mysterious subject? Are you interested in learning just what it is that Einstein actually did that made him so famous? Then this wonderful book is just the thing. I read the original 1945 edition when I was a high-school student in the 1950s, and it had a tremendous impact on me. I predict the same experience for you, or perhaps a young friend, with this new, updated edition.Paul J. Nahin, author of Time Machines, Oliver Heaviside, and Dr. Eulers Fabulous Formula

Lillian R. Lieber was a professor and head of the Department of Mathematics at Long Island University. She wrote a series of lighthearted (and well-respected) math books, many of them illustrated by her husband, Hugh Gray Lieber.

David Derbes teaches physics at the University of Chicago Laboratory Schools.

Robert Jantzen is a professor of mathematics at Villanova University.

"A delightful book."New York Times

"I have studied with pleasure [this] new bookBeautiful examplesIlluminating. I am convinced that [Lieber's] original enterprise will get the recognition it so richly deserves."Albert Einstein

"The Liebers have written an ingenious, entertaining, and illuminating book."Saturday Review of Literature

"The book should be 'required reading' especially for non-mathematicians."E.T. Bell, author ofThe Development of Mathematics

First published in 1942, this whimsical exploration of how to think in a mathematical mood continues to delight math-lovers of all ages.

Do you know that two times two is not always four; that the sum of the angles in a triangle does not always equal 180; that sometimes it is possible to draw two parallel lines through the same point? InThe Education of T. C. MITS, Lillian Lieber opens the door to the wonder of mathematical thinking and its application to everyday life. Lieber uses simple language and fanciful illustrations drawn by her husband, Hugh, to present fundamental mathematical concepts with a deft touch.

The new foreword by Harvard University mathematics professor Barry Mazur is a tribute to the Liebers' influence on generations of mathematicians.

Lillian Lieberwas the head of the Department of Mathematics at Long Island University. She wrote a series of lighthearted (and well-respected) math books in the 1940s, includingThe Einstein Theory of Relativity,Infinity, andMits, Wits & Logic.

Hugh Gray Lieberwas the head of the Department of Fine Arts at Long Island University. He illustrated many books written by his wife Lillian.

Barry MazurBarry Mazur is a mathematician and is the Gerhard Gade University Professor at Harvard University. He is the author ofImagining Numbers (particularly the square root of minus fifteen). He has won numerous honors in his field, including the Veblen Prize, Cole Prize, Steele Prize, and Chauvenet Prize.

"The interpolations tying mathematics into human life and thought are brilliantly clear."Booklist

"Her presentationis conversational and humorous, and should help to simplify some complex concepts."Kirkus

Infinity. It sounds simplebut is it? This elegant, accessible, and playful book artfully illuminates one of the most intriguing ideas in mathematics. Lillian Lieber presents an entertaining, yet thorough, explanation of the concept and cleverly connects mathematical reasoning to larger issues in society. Infinityincludes a new foreword by Harvard professor Barry Mazur.

"Another excellent book for the lay reader of mathematicsIn explaining [infinity], the author introduces the reader to a good many other mathematical terms and concepts that seem unintelligible in a formal text but are much less formidable when presented in the author's individual and very readable style."Library Journal

"Mrs. Lieber, in this text illustrated by her husband, Hugh Gray Lieber, has tackled the formidable task of explaining infinity in simple terms, in short line, short sentence technique popularized by her in The Education of T.C. MITS."Chicago Sunday Tribune

Lillian Lieberwas the head of the Department of Mathematics at Long Island University. She wrote a series of lighthearted (and well-respected) math books in the 1940s, includingThe Einstein Theory of Relativity andThe Education of T.C. MITS (also published by Paul Dry Books).

Hugh Gray Lieberwas the head of the Department of Fine Arts at Long Island University. He illustrated many books written by his wife Lillian.

Barry Mazuris a mathematician and is the Gerhard Gade University Professor at Harvard University. He is the author ofImagining Numbers (particularly the square root of minus fifteen). He has won numerous honors in his field, including the Veblen Prize, Cole Prize, Steele Prize, and Chauvenet Prize.