Rui Fausto was born in Coimbra, the 7th January 1961, son of António Armando da Silva Lourenço (b. 1933, Coimbra) and Maria da Conceição Lourenço (b. 1937, Coimbra). He moved to the industrial village of Marinha Grande just after his birth, where he studied the first two years at the primary school. In 1968, at the age of seven, he moved with his parents and brother (Paulo Renato, b. 1962) to the former portuguese colony, Angola, where he finished the primary school and first half of the high school. He studied successively in Luanda, Henrique de Carvalho, Caluquembe and Malange, till his return to Portugal, in 1975, after the portuguese revolution (25th April). After one year living in the village of Carregal do Sal, Rui Fausto moved again to Marinha Grande, where he finished his high school, and then to Coimbra, to study Physics at the University. After one year studying Physics, he choose to continue studying Chemistry. He finished his graduation in Chemistry, in1984, and later on his Ph.D. in Sciences (specialization: Chemistry), in 1988.