All models are wrong, some are useful - George Box
In theory, theory and practice are the same. In practice, they are different. Einstein
Paraphrasing Wittgenstein: He who understands things finally recognizes their propositions as senseless, when he has climbed out through them, on them, over them, he must so to speak, throw away the ladder, after he has climbed up on it-then he sees the world rightly.