G. E. Moore

English philosopher (1873–1958)

Principia Ethica redefined the parameters of moral discourse at the dawn of the twentieth century, establishing the author as a central figure in the shift toward analytic philosophy. Through a rigorous examination of common sense and the nature of goodness, the work challenged prevailing idealistic frameworks and left a lasting imprint on metaethics and philosophical inquiry.

Academic Formation and Early Career

Born in 1873 at Upper Norwood, George Edward Moore received his early education at Dulwich College. In 1892, he enrolled at Trinity College, Cambridge, where he excelled in classics and moral sciences, earning a double first. His tenure at Cambridge defined his professional life, leading to a fellowship at Trinity in 1898. He served as the University of Cambridge Professor of Mental Philosophy and Logic from 1925 until 1939, consistently advocating for a methodical approach to philosophical problems.

Philosophical Contributions

Moore is primarily recognized for his rejection of idealism and his insistence on the validity of common sense. His analytical technique often focused on the clarity of definitions and the potential for logical errors in complex arguments. Notable essays, including A Defence of Common Sense and A Proof of the External World, exemplify his patient, methodical style. Furthermore, he influenced the intellectual trajectory of his era by chairing the Cambridge University Moral Sciences Club and editing the journal Mind.

THE FREE TEST
How high is yours?

Twenty questions, eight minutes on the clock, and a percentile measured against everyone who has taken it. No sign-up.

Take the IQ test →

The Ethics of Indefinability

In Principia Ethica, Moore introduced the concept of the naturalistic fallacy, arguing that moral properties such as goodness cannot be reduced to or defined by natural properties. His open-question argument posited that because one can always meaningfully ask whether a pleasant or complex thing is truly good, goodness itself must remain an indefinable, simple quality. This perspective steered twentieth-century metaethics away from reductionist approaches, insisting that value remains a distinct and irreducible category of thought.

Institutional Recognition and Later Life

Beyond his academic duties, Moore maintained significant social and professional ties, including membership in the Cambridge Apostles. His contributions to the field were formally acknowledged when he became a Fellow of the British Academy in 1918. In 1951, he received the Order of Merit, presented to him at Buckingham Palace. He remained an active voice in humanism, presiding over the British Ethical Union from 1935 to 1936. Moore died in 1958 in Cambridge and was interred at the Ascension Parish Burial Ground.

Fast facts

Questions readers ask

What is the naturalistic fallacy?

It is the error of attempting to define moral concepts like 'good' by equating them with natural properties, such as 'pleasantness'.

Did G. E. Moore identify as a religious person?

No, Moore was an atheist throughout his life.

Was he associated with the Bloomsbury Group?

While he influenced several members of the group, he abstained from formal involvement with them.

Achievements

Compare with the greats

Henri Poincar vs Johann Sebastian BachJohann Sebastian Bach vs Pablo PicassoFrancis Crick vs William James SidisCharles Dickens vs William James Sidis
See the IQ Rankings →All comparisons →

Child prodigies

Ethan BortnickEthan BortnickGuinness World Record — Youngest Solo Musician to Headline a…Tathagat Avatar TulsiTathagat Avatar TulsiEarned a BSc at 11, an MSc at 12, and became an IIT professor…Lydia SebastianMensa Score 162 at Age 12 — Indian-British Doctor's Daughter…Colin CarlsonBegan university courses at nine and now forecasts the next…
Child prodigies →

Play & come back tomorrow

Daily Genius Challenge · Guess the genius
Scottish physicist who unified electricity, magnetism and light into one set of equations.
Tap your answer ↓
Which Genius Are You? Free IQ Test