Hans Freudenthal - Weeding and sowing (1977)

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Educational technique needs a philosophy, which is a matter of faith rather than of science.

Hans Freudenthal

A true aphorism legitimates itself; whoever feels the need to legitimate an aphorism, admits that it is illegal. The surface of an aphorism should conceal profound truth. The claim that everybody can learn everything is superficial, but is as wrong as it can be. As a matter of fact, it is no aphorism but an advertising slogan, and the excuse that it is an aphorism, is a mere wink: in advertising you cannot do without exaggerating. But even as a wink it does not become more true.

Hans Freudenthal

Science should be distiguished from technique and its scientific instrumentation, technology. Science is practised by scientists, and techniques by 'engineers' — a term that in our terminology includes physicians, lawyers, and teachers. If for the scientist knowledge and cognition are primary, it is action and construction that characterises the work of the engineer, though in fact his activity may be based on science. In history, technique often preceded science.

Hans Freudenthal