“One reason why mathematics enjoys special esteem, above all other sciences, is that its laws are absolutely certain and indisputable, while those of other sciences are to some extent debatable and in constant danger of being overthrown by newly disco”
Albert Einstein

oops.. too late... Okay then: I remember this one “Don't tell any big lies today. Small ones can be just as effective.” but it is not from a special person - more a saying than a quote