Nathan of Breslov,
Translation:Likutei Halakhot — Yoreh Deah
“ And even tzadikim as these who cleaned and sanctified themselves from the zuhamat hanachash completely and broke all the cravings and nullified the body and the material completely, they too have their main strengthening only through the holy faith, as understood in the words of Rabeinu z"l in several places. For it is impossible to attain any... ”
