CCC 355 “God created man in his own image, in the image of God he created him, male and female he created them.”¹ Man occupies a unique place in creation: (I) he is “in the image of God”; (II) in his own nature he unites the spiritual and material worlds; (III) he is created “male and female”; (IV) God established him in his friendship.

CCC 356 Of all visible creatures only man is “able to know and love his creator”.² He is “the only creature on earth that God has willed for its own sake”,³ and he alone is called to share, by knowledge and love, in God’s own life. It was for this end that he was created, and this is the fundamental reason for his dignity:
What made you establish man in so great a dignity? Certainly the incalculable love by which you have looked on your creature in yourself! You are taken with love for her; for by love indeed you created her, by love you have given her a being capable of tasting your eternal Good.⁴

1 Gen 1:27.
2 GS 12 # 3.
3 GS 24 # 3.
4 St. Catherine of Siena, Dialogue IV, 13 “On Divine Providence”: LH, Sunday, week 19, OR.