In a 1985 book, which financier called arbitrage "Wall Street's best kept money-making secret"?

Which pop artist's New York studio was known as The Factory? In a 1931 issue of The New Yorker, who quipped, "Theodore Dreiser should ought to write nicer"? In a 1947 novella by John Steinbeck, a diver named Kino finds which valuable title object to pay his child's doctor bil… In a 1961 speech, who said "Ask not what America will do for you, but what together we can do for the freedom of man"? In a 2002 blockbuster, who played both Peter Parker and "your friendly neighborhood Spider-Man"? In a leaf, which food-making process takes place in the palisade and spongy cells? In a legal case he's the equivalent of Mr. X; in real life, he was a member of the band X. Who is he? In a New York magazine article, Tom Wolfe gave the 1970s which self-centered nickname?