Pedro Nunes (1502-1578): Pedro Nunes site, Noniana (Henrique Leitão)
Pedro Nunes, Learning is not inventing (from Libro de Algebra, 1567)
Galileo Galilei, On the relativity of error (from Discourses and Mathematical Demonstrations, 1932)
Albert Einstein, Geometry and experience (on axiomatics and reality), 1921.
Winston Churchill, I had a feeling once about Mathematics..., My Early Life: 1874-1904, 1930.
Eugene Wigner, The unreasonable effectiveness of mathematics in the natural sciences, Communications in Pure and Applied Mathematics, 13-1, February 1960.
Richard W. Hamming, The unreasonable effectiveness of mathematics, American Mathematical Monthly, 87-2, February 1980.
Vladimir Arnold, On teaching mathematics (Mathematics is part of physics...), extended text of an address at Palais de la Découverte, Paris, March 7, 1997.
JOKES: 64 = 65?, The hanging root, limits, Ensino moderno da matemática (in Portuguese), Triangle puzzle
Popularization of mathematics (in Portuguese)