Sophisticated methodological falsificationism offers new standards for intellectual honesty. Justificationist honesty demanded the acceptance of only what was proven and the rejection of everyting unproven. Neojustificationist honesty demanded the specification of the probability of any hypothesis in the light of the available empirical evidence. The honesty of naive falsificationism demanded the testing of the falsifiable and the rejection of the unfalsifiable and the falsified. Finally, the honesty of sohisticated falsificationism demanded that one should try to look at things from different points of view, to put forward new theories which anticipate novel facts, and to reject theories which have been superseded by more powerful ones. (pp. 37-38)
Lakatos, I. (1978). Falsification and the methodology of scientific research programmes. In J. Worrall & G. Currie (Eds.), Imre Lakatos: Philosopical papers, Vol. 1: The methodology of scientific research programmes (pp. 8-101). Cambridge: Cambridge University Press.