"Only thanks to the concept of persona – a being endowed with dignity and absolute value – brought by Christianity, which makes all men images of God created directly by Him, do all forms of discrimination based on sex, age, race, language, power, wealth, religion, etc. All men are equally worthy of esteem, respect and love, even their enemies, especially the weakest, the poorest, the most humble and defenceless. (introduction, p. 10)"