diff --git a/guide/english/logic/algebra-of-logic/index.md b/guide/english/logic/algebra-of-logic/index.md
index 87ff5735e2..41cb5e18ed 100644
--- a/guide/english/logic/algebra-of-logic/index.md
+++ b/guide/english/logic/algebra-of-logic/index.md
@@ -19,6 +19,9 @@ The three basic operations in Boolean Algebra are `AND`, `OR`, and `NOT`. Consid
- `NOT (x AND y) = NOT x OR NOT y`
- `NOT (x OR y) = NOT x AND NOT y`
+The above statements are called "De Morgan's Laws." This is a very useful and important law in Boolean Algebra.
+
+
### More Information:
- The Calculus of Logic: George Boole
- Boolean algebra article: Wikipedia