ROOT OF SORROW 

II. 3. ‘BY not seeing the f3our Noble Truths as they really are,
Long is the path that is traversed through many a birth;
When these are grasped, the cause of birth is then removed,
The root of sorrow rooted out, and there is no more birth.’

Buddhist Suttas – MAHÂ-PARINIBBÂNA-SUTTANTA 
Translated from Pâli by T. W. Rhys Davids [1881]
http://www.sacred-texts.com/bud/sbe11/sbe1103.htm