diff --git a/config.org b/config.org
index 11e8a6d..1fa4513 100644
--- a/config.org
+++ b/config.org
@@ -1391,6 +1391,23 @@
 
     I think that's all I need for now!
 
+** Maxima
+   Maxima is an absolutely amazing tool for mathematical symbolic
+   processing.  And to make matters better, it's lispy. It's giving
+   old school expert system but make it actually astonishingly useful
+   type shit.
+
+   The =maxima= package provides good Emacs integration, with syntax
+   highlighting for the DSL and a nice inferior process mode for the
+   interpreter.  Files for the DSL conventionally have the ".mac"
+   extension, so want to open those files in =maxima-mode=.
+
+   #+begin_src emacs-lisp
+     (use-package maxima
+       :mode ("\\.mac\\'" . maxima-mode)
+       :interpreter ("maxima" . maxima-mode))
+   #+end_src
+
 * Backup and Autosave
 ** Keep $PWD Tidy
    Emacs' default behaviour of dumping temporary files in the current