diff --git a/lib/eval.coffee b/lib/eval.coffee
index a37a64c..88597f2 100644
--- a/lib/eval.coffee
+++ b/lib/eval.coffee
@@ -5,6 +5,7 @@ lispeval = (element, scope) ->
 
   switch (car element)
     when 'number' then parseInt (cadr element), 10
+    when 'string' then (cadr element)
     when 'symbol' then lookup scope, (cadr element)
     when 'list'
       proc = lispeval (caadr element), scope
diff --git a/lib/fn.coffee b/lib/fn.coffee
index 4f51a49..f54534d 100644
--- a/lib/fn.coffee
+++ b/lib/fn.coffee
@@ -23,9 +23,15 @@ module.exports =
         cmap((cdr cells), (cdr params), nscope))(cells, params, {})
 
       # Execute and evaluate the body, creating an inner scope that
-      # consists of all the bound variables (the parameters) evaluated
-      # in the context of the function call, and all of free variables
-      # evaluated in the context of the defining scope.
+      # consists of: (1) the bound variables (the parameters)
+      # evaluated in the context of the function call, because that's
+      # where they were encountered (2) the free variables evaluated
+      # in the context of the defining scope, because that's where
+      # *they* were encountered.
+      #
+      # While this inspiration comes from Coglan, the clearest
+      # explanation is from Lisperator's 'make_lambda' paragraph at
+      # http://lisperator.net/pltut/eval1/
 
       inner_scope = cons(new_scope, defining_scope)
       (nval = (body, memo) ->