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Welles, Orson

(Encyclopedia)Welles, Orson, 1915–85, American actor, director, and producer, b. Kenosha, Wis. From childhood he evinced a precocious talent and lofty sense of self-assurance in theatrical matters. He began actin...

Gibbon, Edward

(Encyclopedia)Gibbon, Edward, 1737–94, English historian, author of The History of the Decline and Fall of the Roman Empire. His childhood was sickly, and he had little formal education but read enormously and om...

Coolidge, Calvin

(Encyclopedia)Coolidge, Calvin, 1872–1933, 30th President of the United States (1923–29), b. Plymouth, Vt. John Calvin Coolidge was a graduate of Amherst College and was admitted to the bar in 1897. He practice...

Cohen, Leonard Norman

(Encyclopedia)Cohen, Leonard Norman, 1934–2016, Canadian songwriter, singer, and poet, b. Montreal, B.A. McGill Univ., 1955. He initially wrote poetry, publishing his first collection, Let Us Compare Mythologies,...

Whitehead, Alfred North

(Encyclopedia)Whitehead, Alfred North, 1861–1947, English mathematician and philosopher, grad. Trinity College, Cambridge, 1884. There he was a lecturer in mathematics until 1911. At the Univ. of London he was a ...

memory, in psychology

(Encyclopedia)memory, in psychology, the storing of learned information, and the ability to recall that which has been stored. It has been hypothesized that three processes occur in remembering: perception and regi...

Greene, Graham

(Encyclopedia)Greene, Graham (Henry Graham Greene), 1904–91, English novelist and playwright. Although most of his works combine elements of the detective story, the spy thriller, and the psychological drama, his...

epistemology

(Encyclopedia)epistemology ĭpĭsˌtəmŏlˈəjē [key] [Gr.,=knowledge or science], the branch of philosophy that is directed toward theories of the sources, nature, and limits of knowledge. Since the 17th cent. e...

atomic weight

(Encyclopedia)atomic weight, mean (weighted average) of the masses of all the naturally occurring isotopes of a chemical element, as contrasted with atomic mass, which is the mass of any individual isotope. Althoug...

Leopardi, Giacomo

(Encyclopedia)Leopardi, Giacomo jäˈkōmō lāōpärˈdē [key], 1798–1837, Italian poet and scholar, considered Italy's outstanding 19th-century poet. An intellectual prodigy, he taught himself Hebrew and ancie...