John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke. ...

The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke. (John Allen Paulos)

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John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

John Allen Paulos Quotes: The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.