gistfile1.clj

(defmacro a [person]
  `(println "hello" ~person))

user=> (macroexpand-1 '(a anybody)) 
(clojure.core/println "hello" anybody)

user=> (a "anybody")
hello anybody
nil

-------------
(defmacro a [person]
  (list println "hello" person))

user=> (macroexpand-1 '(a anybody))    
(#<core$println__5440 clojure.core$println__5440@681ff4> "hello" anybody)

user=> (a "anybody")
hello anybody
nil