David Malet Armstrong (born 8 July 1926), often D. M. Armstrong, is an Australian philosopher. He is well-known for his work on metaphysics and the philosophy of mind, and for his defence of a factualist ontology, a functionalist theory of the mind, an externalist epistemology, and a necessitarian conception of the laws of nature. He was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 2008.
From Philosophy of Mind by J. Kim "For an accessible Wittgensteinian perspective on mentality and behavior, see Norman Malcolm contributions in Consciousness and Causality by D. M. Armstrong and Norman Malcolm (Oxford: Blackwell, 1984)."