A sentence is factually significant only is there is some form of evidence that could falsify it
verification principle
the meaning of a statement is its verification
Non-cognitive language
Language of which it is inappropriate to ask whether or not it is factual. Such language may make moral claims or it may convey emotions, give commands, etc.
Cognitive language
Conveys factual information and is open to examination. Mostly synthetic in nature
Metaphysical statements
Claims made about things beyond the empirical world
Logical positivism
The claim that only statements of logic or those capable of proof by empirical evidence are meaningful. Metaphysical and religious language are meaningless
Vienna Circle
A group of philosophers who met in Vienna in the early part of the twentieth century. Their theory of Logical Positivism was the inspiration behind Ayers Verification principle
Hume's fork
The name given to one of Hume Philosophical claims.
