Priests are not mushrooms

Pope Francis spoke of Priesthood and formation on Nov. 20, 2015 and here's what I liked most:

Priests also have a history, they are not 'mushrooms' which sprout up suddenly in the cathedral on the day of their ordination. 

It is important for formators and priests themselves to remember this and to know how to take into account this personal history along the path of formation … this means that one cannot become a priest, believing that one has been formed in a laboratory, no; he starts in the family with the 'handing on' of the faith and with all the experiences of the family. 

He added that each vocation is personalized,

because it is the concrete person who is called to discipleship and the priesthood.

A good priest, therefore, is first of all a man with his own humanity, who knows his own history, with its riches and its wounds, who has learned to make peace with this, achieving the fundamental serenity proper to one of the Lord's disciples. Human formation is therefore a necessity for priests, so that they learn not to be dominated by their limits, but rather to put their talents to use.