This man espoused the "doctrine of external relations," which later grew into his "logical atomism." G.E.L. Owen's article "Eleatic Questions" was heavily inspired by this man's analysis of Parmenides in his History of Western Philosophy. His rejection of Moore's concept of the absolute good influenced such works of ethics 
This man espoused the "doctrine of external relations," which later grew into his "logical atomism." G.E.L. Owen's article "Eleatic Questions" was heavily inspired by this man's analysis of Parmenides in his History of Western Philosophy. His rejection of Moore's concept of the absolute good influenced such works of ethics as Religion and Science and Why I am Not a Christian, though he may be best known for co-developing a theory of types with Alfred North Whitehead. For 10 points, name this logician and co- author of Principia Mathematica.
This man espoused the "doctrine of external relations," which later grew into his "logical atomism."
Bertrand Arthur William Russell