Logical constants, including logical connectives and quantifiers, can all be reduced conceptually to logical truth. Propositional logic is closed under truth-functional connectives. All other well-formed formulae are obtained by composing atoms with logical connectives and quantifiers. Relationships between predicates can be stated using logical connectives. This collection includes all connectives and quantifiers of classical logic. "Commutativity" is a property of some logical connectives of truth functional propositional logic. "Distributivity" is a property of some logical connectives of truth-functional propositional logic. "Associativity" is a property of some logical connectives of truth-functional propositional logic. The propositions without logical connectives are called atomic propositions. Loglan has several sets of conjunctions to express the fourteen possible logical connectives. Compound propositions are formed by connecting propositions by logical connectives. The definitions above use infix notation for binary connectives such as formula 14. The following logical equivalences demonstrate that distributivity is a property of particular connectives. The following logical equivalences demonstrate that commutativity is a property of particular connectives. The following logical equivalences demonstrate that associativity is a property of particular connectives.