And in the same book:"Filling the world with light, being the salt and light — that was how our Lord described the mission of his disciples. To bring to the ends of the earth the good news of God’s love. All of us Christians should devote our life to doing this, in one way or another.
I’ll go further than that. We have to yearn not to be alone. We have to encourage others to help in this divine task of bringing joy and peace to men’s hearts. As St Gregory the Great says: “Insofar as you progress, attract others to go along with you, desire to have companions on the road to the Lord.”
But bear in mind that, as our Lord tells us in a parable, the sower of weeds came “while men slept.” We so easily allow ourselves to be carried away by the torpor of selfishness and superficiality, getting wrapped up in thousands of passing experiences, that we avoid coming to grips with the real meaning of the world and life. A bad thing that lethargy, which smothers man’s dignity and makes him a slave of sadness! (Escriva, Christ is passing by).
We Christians have a commitment of love to the calling of divine grace, which we have freely accepted, an obligation which urges us to fight tenaciously. We know that we are as weak as other men, but we cannot forget that if we use the means available to us, we will become salt and light and leaven of the world; we will be the consolation of God. Our determination to persevere in this resolution of Love is, moreover, an obligation of justice. This obligation — common to all Christians — implies a constant battle. The entire tradition of the Church has described Christians as milites Christi: soldiers of Christ. Soldiers who bring serenity to others while continually fighting against their own bad inclinations. Sometimes because we are short on supernatural outlook, in effect short on faith, we do not want to hear any talk of life on earth as a kind of war. We maliciously insinuate that if we think of ourselves as milites Christi, there is a danger that we might use the faith for earthly purposes, bringing pressure to bear, creating little isolated groups. This very naive line of thought is completely illogical and usually goes hand in hand with cowardice and love of comfort.
With the consent of the Roman Pontiff, this diaconate can, in the future, be conferred upon men of more mature age, even upon those living in the married state. It may also be conferred upon suitable young men, for whom the law of celibacy must remain intact.
Can. 1031 §2. A candidate for the permanent diaconate who is not married is not to be admitted to the diaconate until after completing at least the twenty-fifth year of age; one who is married, not until after completing at least the thirty-fifth year of age and with the consent of his wife