# Logical Propositions # Links --- # References List propositions from page xvii Hoppe. "The title, On Interpretation , reflects the notion that logic was regarded as the interpretation of thought. 1 In this treatise, Aristotle set down rules of logic dealing with statements called propositions . A proposition is any statement that has the property of truth or falsity. A prayer, Aristotle says, is not a proposition. “Come here” and “Where are you?” are not propositions. “2 + 2 = 5” is a proposition (it is false). “Socrates was a man” is a proposition (it is true). Propositions can be true or false and nothing in between (law of the excluded middle), but not both true and false at the same time (law of noncontradiction). 2 “All tornadoes are destructive” might be a false proposition if it is true that some tornadoes are not destructive, even if only one is not. “That tornado is destructive” would certainly be either true or false but not both. We would know whether the proposition is true or false by checking the facts and agreeing on a definition of “destructive.” “Some tornadoes are destructive” would qualify as a proposition, and we would all probably agree it is a true proposition, having heard of at least one tornado that met our definition of “destructive.”" from "Logic Made Easy: How to Know When Language Deceives You" by Deborah J. Bennett [http://amzn.to/2bZdISC](http://amzn.to/2bZdISC)