From the greatest to the smallest, happiness and usefulness are largely found in the same soul, and the joy of life is won in its deepest and truest sense only by those who have not shirked life's burdens.
Joie est mon caractere, C'est la faute a Voltaire; Misere est mon trousseau C'est la faute a Rousseau. [Joy is my character, 'Tis the fault of Voltaire; Misery is my trousseau 'Tis the fault of Rousseau.] - Gavroche
Man's freedom is never in being saved from troubles, but it is the freedom to take trouble for his own good, to make the trouble an element in his joy.
If in this hell of a world one can bring a little joy and peace even for a day into the heart of a single person, that much alone is true; this I have learnt after suffering all my life; all else is mere moonshine.
Serving throughout the world is a great missionary force going about doing good. Missionaries teach truth. They dispel darkness. They spread joy. They bring precious souls to Christ.