Vatican City, Jun 18, 2015 / 11:09 am (CNA/EWTN News).- Despite many claiming they helped to draft Pope Francis' new encyclical, the final text cannot be attributed to any 'hidden' advisors, says a former Vatican official.

The proof, he says, is shown by the fact that the encyclical stands on the shoulders of previous magisterial teachings.

The encyclical, “Laudato Si,” meaning “Praise be to You,” was published June 18. Its name is taken from St. Francis of Assisi's “The Canticle of the Sun.”