Quote by Quine, Willard Van Orman
"Identity conditions must be made explicit in our theories."
"Identity conditions must be made explicit in our theories."
"To be is to be the value of a variable."
"The problem of induction is to justify the rules by which we project unobserved instances from observed ones."
"Ontology is what one says exists; ideology is how one says one determines what exists."
"There is no fact of the matter about how language actually carves up the world."