Background
He was born in 1582 in Leno near Brescia in Italy, at the time part of the Republic of Venice.
He was born in 1582 in Leno near Brescia in Italy, at the time part of the Republic of Venice.
In 1610, he was sent as a missionary to China. While waiting at Macau for a favorable opportunity to enter the country he taught mathematics to local scholars and published his "Observation sur l'éclipse de lune du 8 Novembre 1612, faite a Macao" (Mémoires de l'Acad. des Sciences, VII, 706. )
He adopted the dress and manners of the country, was the first Christian missionary in Jiangxi, and built several churches in Fujian. One of his converts, a scholar name Li Jiubiao, recorded Aleni's responses to the questions and speculations of his parishioners and compiled them into a journal.
He became a member of the Society of Jesus in 1600.