The “full truth”:
I think everyone would like to know for sure 100% proof positive that what they believe is 100% accurate. We are all like doubting “Thomas”, the Apostle who did not believe that Jesus had come back from the dead. He wanted to touch the wounds of Jesus and see with his own eyes, before he would believe the testimony of his friends.
Even though he knew these people and should have trusted the testimony of many, he had to experience it himself to fully believe. Jesus did appear to him, and Jesus offered to let Thomas put his hand in the wounds.
We are all like that, until Jesus appears to us in real life, we will always have that little bit of doubt, and chances are, even if Jesus did appear personally, we may even still question our own sanity.
The vast majority of us will never have this first hand appearance, but what we do have are testimony from saints and holy people who have had such experiences. Besides the scriptures, which are almost 2000 years old, we have saints who have had mystical and supernatural experiences.
Throughout the world there are miraculous events that have taken place and there is evidence of these events. In Mexico City there is the cloak of St. Juan Diego, it has the image of Our Lady of Guadalupe, it has properties that are unexplainable by modern science. In Europe, the incorrupt bodies of St. Bernadette and several others, along with physical evidence of many Eucharistic miracles. In Japan, there is the weeping statue of the Madonna.
As recently as the 1960’s, Padre Pio and Sister Sagasawa exhibited the “stigmata” where their hands, feet and/or sides bleed like the wounds of Jesus.
There is evidence in abundance that verifies the legitimacy of the Catholic Church. Many books are available on these subjects, and even though some hoaxes have been perpetrated in the past, the verified and confirmed miracles are still plentiful enough to show proof positive that God stills favors His Church and its saints.