|Mathematicians born on this day:||Mathematicians who died on this day:|
|Wilhelm Lexis||Henri Poincaré||James Lighthill|
Henri Poincaré (1854 - 1912)
Science is built up with facts, as a house is with stones. But a collection of facts is no more a science than a heap of stones is a house.
La Science et l'hypothèse.
Another quotation by one of today's mathematicians
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University of St Andrews, Scotland