Clojure is homoiconic

homoiconic-clojure

user=> (+ 1 1)
2
user=> (defn to-word [symbol]
  #_=> (case symbol
  #_=> + `plus
  #_=> 1 `one
  #_=> 2 `two
  #_=> 3 `three
  #_=> 4 `four
  #_=> 5 `five
  #_=> 6 `six
  #_=> 7 `seven
  #_=> 8 `eight
  #_=> 9 `nine
  #_=> 0 `zero
  #_=> ))
#'user/to-word
user=> (to-word 1)
user/one

user=> (quote (+ 1 1))
(+ 1 1)
user=> (map to-word (quote (+ 1 2)))
(user/plus user/one user/two)