To people who doubt the existence of God and of Catholicism, using science as their reason, I would encourage a survey of the greatest scientists of the 20th Century.
Albert Einstein, though he did not believe in a personal God, did, nonetheless, believe in a "superior mind" and a higher order. God, to him, was a principle of intelligibility and rationality. Einstein's colleagues, who developed quantum theory, had a more advanced image of God…
Max Planck, who was the originator of quantum theory and the domain of subatomic particles, believed not only in God and a personal God, but also in religion. "Religion is the link that binds man to God," he said, "resulting from the respectful humility before a supernatural power, to which all human life is subject and which controls our weal and woe."
Werner Heisenberg, the originator of the matrix formulation of quantum mechanics, was an active Christian and defended the existence of the soul and the need for faith.
Arthur Eddington, who confirmed Einstein's general theory of relativity from an astronomical standpoint and established other theories about the conception of the universe, has a chapter in his book on quantum theory titled, "A Defense of Mysticism." God draws us continually to new heights, be it in the field of art, spirituality, or science. Our minds are not reduced to our brains.
Kurt Godel, a leading mathematician, demonstrated that the human capacity to understand the rules of mathematical principles and algorithms cannot be explained or grounded in the algorithms themselves. This friend of Einstein said, "I am convinced of [the afterlife], independently of any theology. It is possible to perceive, by pure reasoning that it is entirely consistent with known facts. If the world is rationally constructed and has meaning, then there must be such a thing [as an afterlife]."