Alcmaeon of Croton was an early Greek medical writer and philosopher-scientist. He has been described as one of the most eminent natural philosophers and medical theorists of antiquity and he has also been referred to as "a thinker of considerable originality and one of the greatest philosophers, naturalists, and neuroscientists of all time." His work in biology has been described as remarkable, and his originality made him likely a pioneer. Because of difficulties dating Alcmaeon's birth, his importance has been neglected.
Alcman was an Ancient Greek choral lyric poet from Sparta. He is the earliest representative of the Alexandrian canon of the Nine Lyric Poets. He wrote six books of choral poetry, most of which is now lost; his poetry survives in quotation from other ancient authors and on fragmentary papyri discovered in Egypt. His poetry was composed in the local Doric dialect with Homeric influences. Based on his surviving fragments, his poetry was mostly hymns, and seems to have been composed in long stanzas made up of lines in several different meters.
Alcuin of York – also called Ealhwine, Alhwin, or Alchoin – was a scholar, clergyman, poet, and teacher from York, Northumbria. He was born around 735 and became the student of Archbishop Ecgbert at York. At the invitation of Charlemagne, he became a leading scholar and teacher at the Carolingian court, where he remained a figure in the 780s and 790s. Before that, he was also a court chancellor in Aachen. "The most learned man anywhere to be found", according to Einhard's Life of Charlemagne, he is considered among the most important intellectual architects of the Carolingian Renaissance. Among his pupils were many of the dominant intellectuals of the Carolingian era.
Alda Merini was an Italian writer and poet. Her work earned the attention and the admiration of other Italian writers, such as Giorgio Manganelli, Salvatore Quasimodo, and Pier Paolo Pasolini.
Aldo Busi is a contemporary Italian writer and translator, famous for his linguistic invention and for his polemic force as well as for some prestigious translations from English, German and ancient Italian that include Johann Wolfgang Goethe, Lewis Carroll, Christina Stead, Giovanni Boccaccio, Baldesar Castiglione, Friedrich Schiller, Joe Ackerley, John Ashbery, Heimito von Doderer, Ruzante, Meg Wolitzer, Paul Bailey, Nathaniel Hawthorne.
Aldo Capitini was an Italian philosopher, poet, political activist, anti-fascist, and educator. He was one of the first Italians to take up and develop Mahatma Gandhi's theories of nonviolence and was known as "the Italian Gandhi".
Aldo Leopold was an American writer, philosopher, naturalist, scientist, ecologist, forester, conservationist, and environmentalist. He was a professor at the University of Wisconsin and is best known for his book A Sand County Almanac (1949), which has been translated into fourteen languages and has sold more than two million copies.
