Excursions in Geometry the translations are based on

the translations are based on the latest scholarship and have been made with a view toward maximum accuracy and readability

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and the Hammerklavier

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Excursions in Geometry the translations are based on"A charming, entertaining, and instructive book . The writing is exceptionally lucid, as in the author's earlier books, and the problems carefully selected for maximum interest and elegance." Martin Gardner. This book is intended for people who liked geometry when they first encountered it (and perhaps even some who did not) but sensed a lack of intellectual stimulus and wondered what was missing, or felt that the play was ending just when the plot