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strength is a matter of degree, deductive validity and deductive soundness are not. In

that the Gödel sentence can be proven in S .  If so, then by soundness the sentence

Russell’s, but in which some sentences are not true. By the soundness of the

choice between them becomes the flip of a coin, then their soundness must be questioned. A

the early Calvinists) have adopted the first option. They accept the soundness of the

is a full logic just in case both characterizations coincide. A soundness proof establishes K ⊢ D

has free will. The Origination Argument is valid. So, in evaluating its soundness, we must evaluate the

work in premises (1) and (4). To accept the soundness of the

Socrates Solipsism and the Problem of Other Minds Solovyov, Vladimir Sophists Soundness, Validity and Spencer

P Q R S T U V W X Y Z V Validity and Soundness Value of Art