[2] He later taught at the University Settlement Society of New York and at Hull House in Chicago, where he worked with Jane Addams (1860–1935).

[2] He started his academic career as a professor of philosophy and education at the University of California, Berkeley, where he taught from 1898 to 1901.

[1][2] A lifelong Hellenist, "he was wont eloquently and lovingly to read long passages from Aristotle or Plato; and once I chanced to pass his desk before he had closed his books (which he carried in a Harvard green bag).

"[4] Moore's influences included not only Greek philosophers such as Plato and Aristotle but contemporary American philosophers such as William James, Josiah Royce (for whom he named UCLA's Royce Hall) and John Dewey (under whom he studied at Chicago).

[3] In 1896, he married Dr. Dorothea Rhodes Moore (1857–1942), a physician, poet, suffragette, advocate for the poor, activist for prevention of cruelty to children and animals, and divorcêe[6] whose first husband was Charles Fletcher Lummis (1859–1928), a journalist, archaeologist and early activist for Indian rights.

[4] They resided on Woodruff Avenue in Holmby Hills, Los Angeles, close to the UCLA campus.

[9][10] In 1936, Moore reportedly expressed his views to a crowd on the necessity for a "Republican New Deal" that would include the "forcible expulsion of unemployed from relief roles, sterilization of the unfit, and war on radicals.

[12][13][14] Shortly after his death in 1955, the Education building on the UCLA campus was renamed Moore Hall in his honor.

The world is a battlefield and great nations direct their pilots to machine-gun refugees on crowded roads and call it war.

It is a kind of perspective of life, a sailing chart which helps us to find out how human undertakings are related to each other, where dangers lie, and how to sound the depths and keep to navigable waters.