diff --git a/mat/13/15.md b/mat/13/15.md
index 6c4eeff67f..d6d855f280 100644
--- a/mat/13/15.md
+++ b/mat/13/15.md
@@ -24,7 +24,7 @@ They have not literally closed their eyes. This means they refuse to understand.
 
 # understand with their hearts
 
-
+The word hearts here is a metonym for people's innermost being, the source of their thinking and feelings.
 
 # turn again