„Again and again the imaginary plan on which one attempts to build up that order breaks down and then we must try another. This imaginative vision and faith in the ultimate success are indispensable. The pure rationalist has no place here.“

— Max Planck

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„The successful man will profit from his mistakes andtry again in a different way.“
— Dale Carnegie
„Throughout our history the success of the homemaker has been but another name for the up-building of the nation.“
— Theodore Roosevelt