Thomas Aquinas,
Summa Theologiae — Question 70 - OF THE QUALITY OF THE SOUL AFTER LEAVING THE BODY, AND THE PUNISHMENT INFLICTED ON IT MATERIAL FIRE…
“ For in explaining how the soul can suffer from that fire by feeling it, he expresses himself as follows: "Since Truth declares the rich sinner to be condemned to fire, will any wise man deny that the souls of the wicked are imprisoned in flames?" ”
