The little prince expresses his feelings about his flower, which he describes as delicate and fleeting. He acknowledges that she has minimal defenses, just four thorns, to protect herself from the harshness of the world. This reveals his sense of vulnerability and responsibility towards the flower he loves.

By leaving her alone at home, the little prince feels a sense of regret and concern. His journey highlights the importance of caring for those we cherish, especially when they are fragile and in need of protection. This sentiment is central to the themes of love and responsibility in "The Little Prince."