Cardinal Siri's joke:
Where is collegiality mentioned in the Bible?
Answer "And they all fled."
When a reporter asked Pope John how many people worked at the Vatican, His Holiness replied, "About half of them."
Once, when he was still a bishop, he was at a dinner with very many prestigious politicians and other people of that sort in France. The woman sitting across from him was wearing a very scanty dress. He pretended not to notice throughout the course of the dinner, until the main course was finished, and he offered the woman an apple. He said, "Please take this apple, madame." She said, "No, thank you, I would rather not." But Roncalli insisted, "But madame, I insist that you take this apple, for it was not until Eve ate the apple that she realised just how little she was wearing."
Here is an anecdote about St Thomas.
A novice ran into St Thomas's chambres and yelled, 'Thomas, Master Thomas! There is a witch outside the window! You must do something quickly!" Immediately, St Thomas got up and rushed to the window to see the witch.
The novice smirked and said smugly, "O, Master Thomas, I am disappointed. I always believed that you were very intelligent and did not buy into all that superstition, but I guess I was wrong."
St Thomas replied, "I usually do not believe in witches, but I was willing to believe that there was a witch outside the window instead of that a novice would tell a lie to me."
A certain incompetent artist prevailed upon Pope Pius IX to sit for a portrait and when the canvas was finished, urged the Holy Father to sign it with a few words from the Holy Scriptures. The Pope glanced at the portrait, which was so poorly done it scarcely resembled him, and complied with the artist's request. Not until later did it dawn on the artist the Pope had written the words of Our Lord, "Nolite timere, ergo sum" which mean "Fear not, it is I."
Pope John XXIII had a warm, down-to-earth sense of humour. One time a new building had to be constructed on Vatican grounds. The architect submitted the plans to His Holiness, who shortly afterward returned them with these three Latin words written in the margin: "Non sumus angeli", that is to say "We are not angels." The architect and his staff were non-plussed as to what the Pope meant, until finally someone noticed the plans did not include bathrooms.
Shortly after Angelo Roncalli (papal nuncio to France and future pope) became a cardinal, he was asked whether he had any family connections with his namesake, the Marquis of Roncalli. Angelo, a farmer's son, smiled. "Up to now we did not belong to the same family," he replied, "but I think that starting from this moment we will become more and more related."
Pope John [XXIII] once reported that while falling asleep, important thoughts would frequently come to mind and, briefly waking, he would make a mental note: "I must speak to the pope about that." "Then," he continued, "I would be wide awake and remember... that I am pope."
Cardinal Borromeo was once censured for the inordinate time he spent playing and practicing the game of chess. "What would you do if you were busy playing and the world came to an end?" he was asked one day. "Continue playing," he replied.