Long Hoang Duc learned English through listening to The Beatles songs as a child and reading the lyrics to understand the meanings of words. He was motivated to learn English well enough to understand the songs. Later, he started reading science fiction books in English and was eager to read them in the original versions. When he read his first whole book in English and understood it, he felt it was a breakthrough that opened a new world. He has since used English for his studies in mathematics and feels it is an important tool for his learning and career.