Kwa Geok Choo was the daughter of Kwa Siew Tee, former general manager of Oversea-Chinese Bank and Singapore Municipal Commissioner who was a Tong'anese on his paternal side who also had a Teochew mother, and Wee Yew Neo, Geok Choo's Teochew mother from Shantou. Kwa attended the Methodist Girls' School, Raffles Institution and Raffles College, and was a Queen's Scholar of Malaya. According to Lee Kuan Yew's memoirs, by 1939, Kwa and Lee were both top students in Raffles, often coming first and second in exams. They continued their courtship during the Japanese occupation when their studies were disrupted. After the war, Kwa resumed her studies at Raffles College in 1946 while Lee left Singapore to pursue his law degree at the University of Cambridge. Kwa was admitted to Girton College in 1947, after Lee petitioned for her, saying she was "a very bright girl, brighter than I was". She graduated with first-class honours in 1949 and was called to the bar in the subsequent year. She returned to Singapore and was admitted to the Colony Bar in 1951. Kwa was one of the few female lawyers of the country then, practising at Laycock & Ong. Kwa married Lee in secret in London in 1947 and then remarried in Singapore on 30 September 1950. They had two sons – Lee Hsien Loong and Lee Hsien Yang – and a daughter – Lee Wei Ling. Her brother, Kwa Soon Bee, served as a Permanent Secretary in the Ministry of Health. She had three sisters: Mrs Cheah, a teacher at Methodist Girls' School; Mrs Yong, the wife of Yong Nyuk Lin; and Mrs Earnest Lau, who was also a teacher at Methodist Girls School. On 1 September 1955, Kwa Geok Choo founded law firm Lee & Lee with Lee Kuan Yew and Dennis Lee Kim Yew. Kwa practised conveyancing and legal draftsmanship. She retired from partnership in 1987 but stayed on as a consultant thereafter. During Lee's years as Prime Minister and Senior Minister, Kwa was frequently seen with her husband, especially on diplomatic trips and meetings with other foreign ministers. After suffering two strokes in May and June 2008, she was bedridden and developed locked-in syndrome, being unable to speak, but remained conscious and able to understand speech.
Civil and political work
Kwa Geok Choo was a founding member of the People’s Action Party and helped to draft the PAP Constitution. She made her first political speech on Radio Malaya on PAP's policy on women before the 1959 elections, advocating equal pay for women and for monogamous marriages. She mostly stayed out of the political limelight throughout her husband's career. When Singapore separated from the Malaysian Federation, Kwa drafted the clauses in the Separation Agreement for the guarantee of the water agreements between the Malaysian state of Johor and Singapore. This guarantee was done via an amendment to the Federal Constitution of Malaysia. Kwa was also a pioneer advocate of women's rights in Singapore. She spoke on family planning, and supported legal protection for women. Together with other women’s activists such as Chan Choy Siong, Kwa's suggestions were included into the landmark 1961 Women’s Charter, which sought to improve and protect the legal rights of women.
In 2011, the Singapore Management University named its new law library, a new scholars programme and a top law graduate award after Kwa. In the same year, the National University of Singapore established a professorship in property law, a distinguished visitors programme, bursaries and scholarships in her honour. Nanyang Girls' High School also unveiled a bust of Kwa at its Yu Zhi Library, which is named after her. Her alma mater, the Methodist Girls' School, named their auditorium in her honour after it was refurbished in 2011. Singapore's Peranakan Museum currently displays Kwa's barrister wig on its third floor.
Cultural depictions
In 2011, former Far Eastern Economic Review comic artist Morgan Chua released In Memory of Kwa Geok Choo , a book of sketches and political cartoons in tribute to her. In October 2014, the Madame Tussauds Singapore museum unveiled wax figures of Kwa and Lee Kuan Yew seated and smiling together against a backdrop of red flowers formed in the shape of two hearts. The statues were created based on a photograph that was taken by Kwa's niece, Kwa Kim Li, of the pair on Valentine's Day in 2008 at Sentosa. In the same month, Cultural Medallion recipient Tan Swie Hian completed a painting of Kwa and Lee Kuan Yew entitled A Couple. The painting, which took Tan five years to complete, was partially damaged by a fire in 2013. It depicts Kwa and Lee in their youth, is based on a 1946 black-and-white photograph of the couple in the University of Cambridge, and incorporates in its background Tan's poem written in memory of Kwa. Tan said, "I have always felt was a great woman who, despite her intelligence and capability, was also a humble and dedicated wife." A Couple was donated to the National Library of Singapore in 2017 and is displayed at the National Library Building in Victoria Street. She remains symbolic as a recognised leader who impacted generations to come particularly on sensitive issues regarding water.