Non-Contradiction

She showed me some handwritten pages of an unpublished article about the impact of Atlas Shrugged, as well as ten or so pages from a draft of the manuscript of Part One of Atlas Shrugged, "Non-Contradiction."

Steve Mariotti: Remembering Ayn Rand Steve Mariotti 2011

For the irrefutable foundation of reasonable thinking is the Law of Non-Contradiction, that contradictory propositions cannot simultaneously be true.

Andrew Pessin: God Is Not One -- But Religions May Be 2010

The Principle of Non-Contradiction (as discussed already in the section on chaos and morphogony) is the premise on which this notion of validity rests, but it is only a premise.

Archive 2007-04-01 Hal Duncan 2007

Metaphysics begins with an exposition of first philosophy as dealing with all of being, that is, with what is insofar it is, and the properties that belong in itself to anything that has being, and continues with a defense of the Law of Non-Contradiction (for any proposition P, it is not the case that both P and not-P).

Syrianus Wildberg, Christian 2009

Like the unconditional moral ought, as expressed by the Categorical Imperative, the logical ought, as expressed by, e.g., the Law of Non-Contradiction, is rarely correctly obeyed in the real world by finite flawed cognizers like us, who commit logical fallacies and moral sins with comparable frequency: sadly, ought does not entail is.

Kant's Theory of Judgment Hanna, Robert 2009

These worlds are therefore often called logically impossible worlds, for the good reason that logical laws, such as the Law of Non-Contradiction, or the Law of Identity, are assumed to be the most general and topic-neutral: they are supposed to hold, by definition, at all possible worlds.

Impossible Worlds Berto, Francesco 2009

The Principle of Non-Contradiction (as discussed already in the section on chaos and morphogony) is the premise on which this notion of validity rests, but it is only a premise.

A Response to a Response Hal Duncan 2007

A still more specific definition has it that an impossible world is a world that realizes explicit contradictions, that is, where sentences of the form A and ¬A hold, against the Law of Non-Contradiction (see e.g. Lycan 1994).

Impossible Worlds Berto, Francesco 2009

JC B.all, and B. Armour-Garb (eds.), 2004, The Law of Non-Contradiction.

Dialetheism Priest, Graham 2008

As such, dialetheism opposes the so-called Law of Non-Contradiction (LNC) (sometimes also called the Law of Contradiction).

Dialetheism Priest, Graham 2008