33 To make a full and effective Christian education possible, it is absolutely necessary that administrators and teachers find ways and means by which they will be able to understand and approach the minds of others and their characteristic temperaments, their inclinations and their intentions. This should be done so that the new followers of Jesus Christ will assimilate the precepts of the truth of the Gospel, together with its norms and requirements and will be wholly formed by them. Our Redeemer did, in fact, entrust each one of us with compliance with this great commandment: "Thou shalt love the Lord thy God with thy whole heart, and with thy whole soul, and with thy whole mind." (58) Indeed, the sublimity of the Christian calling should shine in all its splendor before the eyes of those who embrace the Catholic religion, so that their hearts will be fired with the desire, the strong resolution to lead a life adorned with all the Christian virtues and distinguished by apostolic activity: a life, We say, modeled on the luminous example of Jesus Christ, who, taking upon Himself our nature, commanded us to follow in His footsteps. (59)
Source: Princeps Pastorum (Vatican.va)