indignation vs more heat than light

indignation

noun
  • A self-righteous anger or disgust. 

  • An anger aroused by something perceived as an indignity, notably an offense or injustice. 

more heat than light

noun
  • More passion or conflict than enlightenment or illumination on a subject. 

How often have the words indignation and more heat than light occurred in a corpus of books? (source: Google Ngram Viewer )