Youcat commented through CCC Question n. 62 Part III.

YOUCAT Question n. 62 Part III. - What is the soul?

(Youcat answer - repeated) The soul is what makes every individual person a man: his spiritual life-principle and inmost being. The soul causes the material body to be a living human body. Through his soul, man is a creature who can say “I” and stand before God as an irreplaceable individual.       

A deepening through CCC

(CCC 154) Believing is possible only by grace and the interior helps of the Holy Spirit. But it is no less true that believing is an authentically human act. Trusting in God and cleaving to the truths he has revealed are contrary neither to human freedom nor to human reason. Even in human relations it is not contrary to our dignity to believe what other persons tell us about themselves and their intentions, or to trust their promises (for example, when a man and a woman marry) to share a communion of life with one another. If this is so, still less is it contrary to our dignity to "yield by faith the full submission of... intellect and will to God who reveals" (Dei Filius: 3: DS 3008), and to share in an interior communion with him.    

Reflecting and meditating 

(Youcat comment) Men are bodily and spiritual creatures. A man’s spirit is more than a function of his body and cannot be explained in terms of man’s material composition. Reason tells us that there must be a spiritual principle that is united with the body but not identical to it. We call it the “soul”. Although the soul’s existence cannot be “proved” scientifically, man cannot be understood as a spiritual or intellectual being without accepting this spiritual principle that transcends matter.    

(CCC Comment)

(CCC 163) Faith makes us taste in advance the light of the beatific vision, the goal of our journey here below. Then we shall see God "face to face", "as he is" (1 Cor 13:12; 1 Jn 3:2). So faith is already the beginning of eternal life: When we contemplate the blessings of faith even now, as if gazing at a reflection in a mirror, it is as if we already possessed the wonderful things which our faith assures us we shall one day enjoy (St. Basil, De Spiritu Sancto, 15, 36: PG 32, 132; cf. St. Thomas Aquinas, STh II-II, 4, 1).    

(This question: What is the soul? is continued)