The Goethe quote is unattributed -- here in single quotes. Perhaps every German knows it. "To whom it is given, to help build the exact sciences, he should be satisfied, and find his innermost happiness in the knowledge, 'to have researched what is knowable, and to peacefuly honor the unknowable.' " Das schönste Glück des denkenden Menschen ist, das Erforschliche erforscht zu haben und das Unerforschte ruhig zu verehren.br/br/Quelle: Maximen und Reflexionen, Nachlaß, Über Natur und Naturwissenschaftbr/br/Johann Wolfgang von Goethebr/deutscher Dichter (1749 - 1832)