Moore

Who he?
G.E. Moore (1873 - 1958) was a British philosopher and contemporary of Bertrand Russell, though I can't imagine the two got along very well as Moore cramped on Bertrand's pipe style, (Moore was born a year later than Russell, so we know he was the copycat).

As a non-naturalist, he is recognised for his salty criticisms of naturalism, namely the: Naturalistic Fallacy and Open Question arguments and generally being a downright grumpy man towards the theory as a whole.