Saint Thomas Aquinas (1225-1274) was an Italian Dominican friar and Catholic priest. He was an immensely influential philosopher, theologian, and jurist in the tradition of scholasticism. In Chesterton's portrayal Saint Thomas is mysterious man who was born in rich family, but despite that, decided to live a humble life of a friar. Because Thomas was quiet and didn't speak much, some of his fellow students thought he was slow and called him the dumb ox, but he was a man of rare brilliance who started a revolution in Christian thought. He was given a title Doctor of the Church by the Catholic Church for having made significant contribution to theology and doctrine through his work.

G. K. Chesterton (1874-1936) was an English writer, poet, philosopher, dramatist, journalist, orator, lay theologian, biographer, and literary and art critic. Chesterton is well known for his fictional priest-detective Father Brown, and for his reasoned apologetics. Even some of those who disagree with him have recognized the wide appeal of such works as Orthodoxy and The Everlasting Man. Chesterton is often referred to as the "prince of paradox".