The monster said to young Conor O'Malley:
It does not matter what you think, because your mind contradicts itself hundreds of times a day. You will write your life not with your words but with what you do. What you think and carry in your head does not matter... only “what you do” will matter.
A Monster Calls (2016)
Directed by J. A. Bayona
Written by Patrick Ness
Novel of the same name