Mathematical proofs, like diamonds, are hard as well as clear, and will be touched with nothing but strict reasoning.


A Mathematical Journey (p. 20), McGraw-Hill Book Company, Inc. 1976


Mathematical proofs, like diamonds, are hard as well as clear, and will be touched with nothing but strict reasoning.

Mathematical proofs, like diamonds, are hard as well as clear, and will be touched with nothing but strict reasoning.

Mathematical proofs, like diamonds, are hard as well as clear, and will be touched with nothing but strict reasoning.

Mathematical proofs, like diamonds, are hard as well as clear, and will be touched with nothing but strict reasoning.