97 As this Encyclical of Ours draws to a close, We want to assure you, Venerable Brethren, of the high hopes We have that these centenary celebrations will, with the help of God, lead to a deeper desire and more intensive efforts on the part of all priests to carry out their sacred ministry with more ardent zeal and especially to work to fulfill "the first duty of priests, that is, the duty of becoming holy themselves.'' (100)
Source: Sacerdotii Nostri Primordia (Vatican.va)