Our freedom to doubt was born out of a struggle against authority in the early days of science. It was a very deep and strong struggle: permit us to question - to doubt - to not be sure. I think that it is important that we do not forget this struggle and thus perhaps lose what we have gained.
Richard P. FeynmanWe have found it of paramount importance that in order to progress, we must recognize our ignorance and leave room for doubt.
Richard P. Feynman