Language Is A Social Art.

If Pressed To Supplement Tweedledee's Ostensive Definition Of Logic With A Discursive Definition Of The Same Subject, I Would Say That Logic Is The Systematic Study Of The Logical Truths. Pressed Further, I Would Say That A Sentence Is Logically True If All Sentences With Its Grammatical Structure Are True. Pressed Further Still, I Would Say To Read This Book.

Confusion Of Sign And Object Is Original Sin Coeval With The Word.

Different Persons Growing Up In The Same Language Are Like Different Bushes Trimmed And Trained To Take The Shape Of Identical Elephants. The Anatomical Details Of Twigs And Branches Will Fulfill The Elephantine Form Differently From Bush To Bush, But The Overall Outward Results Are Alike.

The Variables Of Quantification, 'something,' 'nothing,' 'everything,' Range Over Our Whole Ontology, Whatever It May Be; And We Are Convicted Of A Particular Ontological Presupposition If, And Only If, The Alleged Presuppositum Has To Be Reckoned Among The Entities Over Which Our Variables Range In Order To Render One Of Our Affirmations True.

Logic Is An Old Subject, And Since 1879 It Has Been A Great One.