Simon Blackburn is a British philosopher known for his work in the fields of ethics, philosophy of language, and metaphysics. He has contributed significantly to the development of meta-ethics and is recognized for his advocacy of quasi-realism, a view that seeks to explain moral discourse without committing to the existence of moral facts. Blackburn has authored several influential books, including Think and Ruling Passions, which explore complex philosophical ideas in an accessible manner. He has also held academic positions at various institutions, including Cambridge University and University College London, where he has influenced many students and scholars in the field of philosophy.