It is often said nowadays that the present century thirsts for authenticity. Especially in regard to young people it is said that they have a horror of the artificial or false and that they are searching above all for truth and honesty.
These “signs of the times” should find us vigilant. Either tacitly or aloud — but always forcefully — we are being asked: Do you really believe what you are proclaiming? Do you live what you believe? Do you really preach what you live? The witness of life has become more than ever an essential condition for real effectiveness in preaching. Precisely because of this we are, to a certain extent, responsible for the progress of the Gospel that we proclaim.
– Blessed Pope Paul VI, Evangelii Nuntiandi, 76