Saint John XXIII — His Wisdom in 25 Quotations

Before everything else, fidelity to the Church: One, Holy, Catholic, and Apostolic. Jesus did not found several churches, but one single Church.

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The family, founded upon marriage freely contracted, one and indissoluble, must be regarded as the natural, primary cell of human society. The interests of the family, therefore, must be taken very specially into consideration in social and economic affairs, as well as in the spheres of faith and morals. For all of these have to do with strengthening the family and assisting it in the fulfillment of its mission

— Pacem in Terris, 1963

We are not on earth as museum-keepers, but to cultivate a flourishing garden of life and to prepare for a glorious future. 

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To have accepted with simplicity the honour and the burden of the pontificate, with the joy of being able to say that I did nothing to obtain it, absolutely nothing; indeed I was most careful and conscientious to avoid anything that might direct attention to myself. As the voting in Conclave wavered to and fro, I rejoiced when I saw the chances of my being elected diminishing and the likelihood of others, in my opinion truly most worthy and venerable persons, being chosen.

— Journal of a Soul, page  235

What unites us, is much greater than what divides us.

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This is the rosary of Mary, considered in its various elements, which are linked together in vocal prayer and woven into it as in a delicate and rich embroidery, full of spiritual warmth and beauty.

— On the Holy Rosary, Journal of a Soul, page 360

Consult not your fears but your hopes and your dreams. Think not about your frustrations, but about your unfulfilled potential. Concern yourself not with what you tried and failed in, but with what it is still possible for you to do.

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If all men are in the likeness of God, why should I not love them all, why should I despise them? Should I not rather revere them? This is the reflection which must hold me back from in any way offending against my brothers, for I must remember that they are all made in the image of God and that perhaps their souls are more beautiful and dearer to God than my own.

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In the hour of farewell, or, better, of leave-taking, I repeat once more that what matters most in this life is: our blessed Jesus Christ, his holy Church, his Gospel, and in the Gospel above all else the Our Father according to the mind and heart of Jesus, and the truth and goodness of his Gospel, goodness which must be meek and kind, hardworking and patient, unconquerable and victorious.

— Spiritual Testament, Journal of a Soul, 1954, page 343

[A] devotion to the Eucharist that is ardent, constant and that carries over into works also has the effect of nourishing and fostering the inner perfection of his soul and assuring him, as he carries out his apostolic duties, of an abundance of the supernatural powers that the strongest workers for Christ must have.

— Paenitentiam Agere, 1962

Relations between States, as between individuals, must be regulated not by armed force, but in accordance with... truth, justice and vigorous and sincere co-operation.

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In the Universal Declaration of Human Rights (December 1948) in most solemn form, the dignity of a person is acknowledged to all human beings; and as a consequence there is proclaimed, as a fundamental right, the right of free movement in search for truth and in the attainment of moral good and of justice, and also the right to a dignified life.

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We supplicate all rulers not to remain deaf to the cry of mankind. Let them do everything in their power to save peace. By so doing they will spare the world the horrors of a war that would have disastrous consequences, such as nobody can foresee.

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Born poor, but of honored and humble people, I am particularly proud to die poor.

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Italians come to ruin most generally in three ways, women, gambling, and farming. My family chose the slowest one.

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Certainly, Venerable Brethren, when one views the faith which distinguishes the Church, the sacraments which nourish and perfect her, the universal laws and precepts which govern her, the unfailing glory that is hers by reason of the heroic virtue and constancy of so many of her elect, there can be no doubt that the Bride of Christ, so dear to her divine Redeemer, has always kept herself holy and unsullied.

— Paenitentiam Agere, 1962

The mark of Cain is stamped upon our foreheads. Across the centuries, our brother Abel was lain in blood which we drew, and shed tears we caused by forgetting Thy love. Forgive us, Lord, for the curse we falsely attributed to their name as Jews. Forgive us for crucifying Thee a second time in their flesh. For we knew not what we did.

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The Catholic Church has a dignity far surpassing that of every merely human society, for it was founded by Christ the Lord. It is altogether fitting, therefore, that the language it uses should be noble, majestic, and non-vernacular.

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O Jesus in the Blessed Sacrament, I would like to be filled with love for You; keep me closely united with You, may my heart be near to Yours. I want to be to You like the apostle John. O Mary of the Rosary, keep me recollected when I say these prayers of yours; bind me forever, with your rosary, to Jesus of the Blessed Sacrament. Blessed be Jesus, my love.

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Today the universal common good poses problems of world-wide dimensions, which cannot be adequately tackled or solved except by the efforts of public authorities endowed with a wideness of powers, structure and means of the same proportions; that is... on a world-wide basis.

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Every time I hear anyone speak of the Sacred Heart of Jesus or of the Blessed Sacrament I feel an indescribable joy. It is as if a wave of precious memories, sweet affections and joyful hopes swept over my poor person, making me tremble with happiness and filling my soul with tenderness. These are loving appeals from Jesus who wants me wholeheartedly there, at the source of all goodness, his Sacred Heart, throbbing mysteriously behind the Eucharistic veils... I love to repeat today 'Sweet Heart of my Jesus, make me love You more and more.'

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The thought of the presence of God and the spirit of worship will in all my actions have as their immediate object Jesus, God and man, really present in the most holy Eucharist. The spirit of sacrifice, of humiliation, of scorn for self in the eyes of men, will be illuminated, supported and strengthened by the constant thought of Jesus, humiliated and despised in the Blessed Sacrament.

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There is a common belief that under modern conditions peace cannot be assured except on the basis of an equal balance of armaments...[but] true and lasting peace among nations cannot consist in the possession of an equal supply of armaments but only in mutual trust.

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Think not about your frustrations, but about your unfulfilled potential.

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An angel of Paradise, no less, is always beside me, wrapped in everlasting ecstasy on his Lord. So I am ever under the gaze of an angel who protects and prays for me.