Augustine of Hippo (Saint Augustine of Hippo) (354-430) was a Roman African, early Christian theologian and philosopher from Numidia. He was the bishop of Hippo Regius in North Africa. (Wikipedia)

David Friedrich Strauss (1808-1874) was a German liberal Protestant theologian and writer. (Wikipedia)

Heinrich Cornelius Agrippa von Nettesheim (1486-1535) was a German polymath, physician, legal scholar, soldier, theologian, and occult writer. (Wikipedia)

Saint Thomas Aquinas OP (Thomas of Aquino)(1225-1274) was an Italian Dominican friar, Philosopher, Catholic priest, and Doctor of the Church. He is an immensely influential philosopher, theologian, and jurist in the tradition of scholasticism, within which he is also known as the Doctor Angelicus and the Doctor Communis. (Wikipedia)