After receiving his doctorate, Moore spent three years as a lecturer at University College, Oxford, where he also acted as the junior dean.

[2] One of Moore's distinctive contributions to the area of contemporary metaphysics is a bold defence of the idea that it is possible to think about the world 'from no point of view'.

Drawing on Kant and Wittgenstein, he considers transcendental idealism, which, he argues, is nonsense resulting from the attempt to express certain inexpressible insights.

He applies this idea to a wide range of fundamental philosophical issues, including the nature of persons, value, and God.

He engages with a wide range of approaches and issues in the history of thought about the infinite, including various paradoxes, as well as the problems of human finitude and death.

[7] In Choice, it was described as "a splendid guide through the intellectual history of this powerful and far-reaching idea... very highly recommended for all readers".

[16] His monograph The Evolution of Modern Metaphysics: Making Sense of Things was published in 2012 by Cambridge University Press, and has been called an “important and remarkable book... Everyone interested in metaphysics... ought to read the whole book.”[17] The book has been said to evince "the highest qualities of a historian of philosophy... [It] is positively thrilling to see someone engage with thinkers from both [analytic and continental] traditions and bring them into conversation with each other, especially with such dexterity... an extremely impressive achievement... largely succeeds at its dauntingly difficult task".

[18] In his review of it, John Cottingham writes: "[Moore articulates his story with] extraordinary care and detail... pulls off his [ambitious programme] with a remarkable degree of success... locates his chosen philosophers within a beautifully organised narrative...

The fact that fundamental ethical questions... can be raised as a result of Moore's story... is tribute to the brilliance and importance of this book...

It is a tribute to the author that [the ideas and systems] are handled with such crystal clarity and with an unpretentious and unassuming seriousness... a kind of model for philosophy at its synoptic best... restores one's faith in the future of the subject".

[19] Equally positive reviews were published in Choice, The Philosophical Quarterly, The Times Literary Supplement, Mind and Analysis and Metaphysics.