The mere, pure historian, who works only according to data, is like a man, who without any knowledge of mathematics, has investigated the relations of certain figures, which he has accidentally found, by measuring them; and the problem thus empirically solved is affected of course by all the errors of the drawn figure.
Datuen arabera soilik lan egiten duen historialari soil, hutsak badu antza matematikako batere ezagutzarik gabe, ausaz aurkituriko figuretatik, horien harremana neurketaz ikertzen duenarekin, zeinen enpirikoki aurkituriko zehaztapena marrazturiko figuraren akats guztien jabe baita horregatik: