Sonia Gandhi on Saturday appreciated the efforts of former Prime Minister Indira Gandhi and said that she learnt about the culture of India and political lessons from her."It is from her that I learnt about India, about its culture, about its values. It is from her that I imbibed my earliest political lessons," Sonia Gandhi said."Indira Gandhi was not a figure of history for me, she was my mother-in-law. We lived under the same roof, shared the same joys and sorrows."Sonia Gandhi also regarded Indira as her "mentor".Indira Gandhi, the only woman to serve as Prime Minister of India, was born on November 19, 1917 in Allahabad and served as Prime Minister for three consecutive terms from January 1966 to March 1977 and a fourth term from January 14, 1980 until she was assassinated on October 31, 1984.Indira Gandhi was the only child of India's first Prime Minister Jawaharlal Nehru.