with-input-from-string - evaluating lisp object from string

Well, to be precise I just want to convert string representation of a list such as "(1 2 3 4)" into a list object and with-input-from-string is the way to go. It basically opens a character stream from string and "read" can be used to read from this stream.

(with-input-from-string (in "(1 2 3 4)")
  (read in))