AJ Ayer

• Non-cognitive approach
• Argue moral propositions are not factual
• Ethical claims (e/g murder is wrong) cannot be verified or falsified since those who disprove of murder will accept the claim whereas those who do not mind murdering others will reject it 


  There is no way that this dispute can be solved by appealing to facts or evidence
• Emotivist

  moral statements reduce to statements of approval or disapproval
• Morality is subjective and not objective

  an internal feeling
• Rule and guidelines are largely are a matter of convention, as is the issue of punishment for non-compliance 


  if enough people agree, they will make and enforce a law of forbidding murder