I. M. Pei, who began his long career designing buildings for a New York real estate developer and ended it as one of the most revered architects in the world, died early Thursday May 16 2019 at his home in Manhattan. He was 102. His death was confirmed by his son Li Chung Pei, who is also an architect and known as Sandi. Best known for designing the East Building of the National Gallery of Art in Washington and the glass pyramid at the entrance to the Louvre in Paris, Mr. Pei was one of the few architects who were equally attractive to real estate developers, corporate chieftains and art museum boards. And all of his work — from his commercial skyscrapers to his art museums — represented a careful balance of the cutting edge and the conservative. Mr. Pei (pronounced pay), who was born in China and moved to the United States in the 1930s, was hired by William Zeckendorf in 1948, shortly after he received his graduate degree in architecture from Harvard, to oversee the design of buildings produced by Zeckendorf’s firm, Webb & Knapp. Mr. Pei quickly found himself engaged in the design of high-rise buildings, and he used that experience as a springboard to establish his own firm, I. M. Pei & Associates, which he set up in 1955 with Henry Cobb and Eason Leonard, the team he had assembled at Webb & Knapp. The firm became fully independent from Webb & Knapp in 1960. Ieoh Ming Pei was born in Canton (now Guangzhou) on April 26, 1917, the son of Tsuyee Pei, one of China’s leading bankers. When he was an infant, his father moved the family to Hong Kong to assume the head position at the Hong Kong branch of the Bank of China, and when Ieoh Ming was 9, his father was put in charge of the larger branch in Shanghai. Deciding to attend college in the United States, he enrolled at the University of Pennsylvania. But when he concluded that he was not up to the classical drawing techniques then being taught at Penn, he transferred to the Massachusetts Institute of Technology, from which he received a bachelor of architecture degree in 1940. While he was at M.I.T., Mr. Pei met another Chinese national, Eileen Loo, who had come to the United States in 1938 to study art at Wellesley College in Massachusetts. Like Mr. Pei, she was from a distinguished Chinese family. The two married as soon as she graduated, in 1942. Eileen Pei began graduate work in landscape architecture at Harvard while her husband worked toward his advanced architecture degree, which he received in 1946. Mr. Pei never played down his connections to China. His children were all given Chinese names, and when he won the Pritzker Prize in 1983, widely viewed as the highest honor a living architect can receive, he used the $100,000 award to establish a scholarship fund for Chinese architecture students. His eldest son, T’ing Chung, an urban planner, died in 2003. His wife of 72 years, Eileen, died in 2014. In addition to his son Li Chung, who is known as Sandi, he is survived by another son, Chien Chung, also an architect, who is known as Didi; his daughter, Liane; and grandchildren and great-grandchildren.