The book takes us on a epic journey on the origins of non-Euclidean geometry  based on the parallel lines postulate and its  culmination in General theory of relativity of Einstein. It starts with era of Greek geometers, Euclidand his fifth postulate. Also the mathematical genius of the poet, polymath Omar Khayyam is given. Then the pages turn to mathematical giants like Bolyai, Lobachevsky, Gauss and their contributions to the development of non-Euclidean geometry. Then we come to general relativity and the final chapter on Einstein. The book is illustrated with witty cartoons throughout. The book was translated from the Russian by George Yankovsky. The book was published by Mir Publishers in 1970.