為無為， 則無不治 translation of Dao De Jing
Is the first 為 used in another meaning than the last one.


They have the same literal meaning of 'action', but very different connotations. Since you already know what 無為 is, you know the connotation of the word is much deeper than the sum of the two characters.


  How to translate it


By acting the non-action, nothing can't be treated/ruled.