Sorry, it's getting late...

(write '("one two")) => ("one two")  ; one string

(display '("one two")) => (one two)  ; two symbols

Maybe easier to understand from the Clojure example. When it reads

#object[clojure.core$_PLUS_ 0x2f40a43 "clojure.core$xxxxxx@2f40a43"]

The `#object` part is a tag, and the

[clojure.core$_PLUS_ 0x2f40a43 "clojure.core$xxxxxx@2f40a43"]

part is a normal data structure in Clojure syntax.

user=> (def it '[clojure.core$_PLUS_ 0x2f40a43
"clojure.core$xxxxxx@2f40a43"])
#'user/it
user=> (type it)
clojure.lang.PersistentVector
user=> (count it)
3
user=> (get it 0)
clojure.core$_PLUS_
user=> (get it 1)
49547843
user=> (get it 2)
"clojure.core$xxxxxx@2f40a43"
user=> (map type it)
(clojure.lang.Symbol java.lang.Long java.lang.String)