Charles Sanders Peirce was an American scientist, mathematician, logician, and philosopher who is sometimes known as "the father of pragmatism". According to philosopher Paul Weiss, Peirce was "the most original and versatile of America's philosophers and America's greatest logician". Bertrand Russell wrote "he was one of the most original minds of the later nineteenth century and certainly the greatest American thinker ever".
Charles Sangster was a Canadian poet. He was the first poet to write poetry which was substantially about Canadian subjects. The Dictionary of Canadian Biography calls him "the best of the pre-confederation poets."
Charles Sears Baldwin was an American scholar and professor of rhetoric at Yale University. Born in New York City in 1867, Baldwin entered Columbia College at seventeen and received his A.B. in 1888. He was one of the earliest students to be granted the Ph.D. degree in English at Columbia. Besides teaching at Yale (1895–1911), Baldwin also worked at Barnard College and Columbia University. He was married twice, first in 1894 to Agnes Irwin, and then to Gratia Eaton Whited in 1902. Most of his life an Episcopalian, he converted to Catholicism the year before his death. Baldwin died in New York City in 1935.
Charles Seife is an American author, journalist, and professor at New York University. He has written extensively on scientific and mathematical topics.
Charles Seignobos was a French scholar of historiography and an historian who specialized in the history of the French Third Republic, and was a member of the Human Rights League.
Charles Seymour was an American academic, historian and the 15th President of Yale University from 1937 to 1951. As an academic administrator, he was instrumental in establishing Yale's residential college system. His writing focused on the diplomatic history of World War I.
Charles Sheffield, an English-born mathematician, physicist and science-fiction writer, served as a President of the Science Fiction and Fantasy Writers of America and of the American Astronautical Society.
Dušan Simić, known as Charles Simic, was a Serbian-American poet and co-poetry editor of the Paris Review. He received the Pulitzer Prize for Poetry in 1990 for The World Doesn't End, and was a finalist of the Pulitzer Prize in 1986 for Selected Poems, 1963–1983 and in 1987 for Unending Blues. He was appointed the fifteenth Poet Laureate Consultant in Poetry to the Library of Congress in 2007.
