“In my paper the fact the XY was not equal to YX was very disagreeable to me. I felt this was the only point of difficulty in the whole scheme...and I was not able to solve it.” WholeFactsAbleFeltEqualPaperLogicDifficultySolveCertaintyUncertaintyReasoningSchemesDisagreeableOntology Author:Werner Heisenberg
“For the first time I saw a medley of haphazard facts fall into line and order. All the jumbles and recipes and hotchpotch of the inorganic chemistry of my boyhood seemed to fit into the scheme before my eyes-as though one were standing beside a jungle and it suddenly transformed itself into a Dutch garden.” FirstsFactsEyeScienceOrderFallLinesSawsFitFirst TimeGardenStandingChemistryTransformedSchemesRecipesJungleDutchBoyhoodHaphazardPeriodic TableMedley Book:The Search Source: The Search
“I am somewhat uncertain whether there is a definite factual question as to whether natural language handles truth-value gaps. Nor am I even quite sure that there is a definite question of fact as to whether natural language should be evaluated by the minimal fixed point or another, given the choice of a scheme for handling gaps. We are not at the moment searching for the correct scheme.” ShouldMomentsFactsValuesChoicesLanguageGivenNaturalHandleFixedGapsSchemesUncertainDefiniteFactual Author:Saul Kripke