diff --git a/src/lib/Witch.hs b/src/lib/Witch.hs
index 9cd38b0..c0dc6c5 100644
--- a/src/lib/Witch.hs
+++ b/src/lib/Witch.hs
@@ -26,6 +26,13 @@ module Witch
   , Witch.Utility.tryVia
 
   -- ** Unsafe
+  -- | These functions should only be used in two circumstances: When you know
+  -- a conversion is safe even though you can't prove it to the compiler, and
+  -- when you're alright with your program crashing if the conversion fails.
+  -- In all other cases you should prefer the normal conversion functions like
+  -- 'Witch.Cast.cast'. And if you're converting a literal value, consider
+  -- using the Template Haskell conversion functions like
+  -- 'Witch.Lift.liftedCast'.
   , Witch.Utility.unsafeCast
   , Witch.Utility.unsafeFrom
   , Witch.Utility.unsafeInto