6. Thérèse of the Child Jesus left us writings that deservedly qualify her as a teacher of the spiritual life. Her principal work remains the account of her life in three autobiographical manuscripts (Manuscrits autobiographiques A, B, C), first published with the soon to be famous title of Histoire d'une Âme.

In Manuscript A, written at the request of her sister Agnes of Jesus, then Prioress of the monastery, and given to her on 21 January 1896, Thérèse describes the stages of her religious experience: the early years of childhood, especially the time of her First Communion and Confirmation, adolescence, up to her entrance into Carmel and her first profession.

Manuscript B, written during her retreat that same year at the request of her sister Marie of the Sacred Heart, contains some of the most beautiful, best known and oft-quoted passages from the Saint of Lisieux. They reveal the Saint's full maturity as she speaks of her vocation in the Church, the Bride of Christ and Mother of souls.

Manuscript C, composed in June and the first days of July 1897, a few months before her death and dedicated to the Prioress, Marie de Gonzague, who had requested it, completes the recollections in Manuscript A on life in Carmel. These pages reveal the author's supernatural wisdom. Thérèse recounts some sublime experiences during this final period of her life. She devotes moving pages to her trial of faith: a grace of purification that immerses her in a long and painful dark night, illuminated by her trust in the merciful, fatherly love of God. Once again, and without repeating herself, Thérèse makes the light of the Gospel shine brightly. Here we find the most beautiful pages she devoted to trusting abandonment into God's hands, to unity between love of God and love of neighbour, to her missionary vocation in the Church.

In these three different manuscripts, which converge in a thematic unity and in a progressive description of her life and spiritual way, Thérèse has left us an original autobiography which is the story of her soul. It shows how in her life God has offered the world a precise message, indicating an evangelical way, the "little way", which everyone can take, because everyone is called to holiness.

In the 266 Lettres we possess, addressed to family members, women religious and missionary "brothers", Thérèse shares her wisdom, developing a teaching that is actually a profound exercise in the spiritual direction of souls.

Her writings also include 54 Poésies, some of which have great theological and spiritual depth inspired by Sacred Scripture. Worthy of special mention are Vivre d'Amour!... (Poésies 17) and Pourquoi je t'aime, ô Marie! (Poésies 54), an original synthesis of the Virgin Mary's journey according to the Gospel. To this literary production should be added eight Récréations pieuses: poetic and theatrical compositions, conceived and performed by the Saint for her community on certain feast days, in accordance with the tradition of Carmel. Among those writings should be mentioned a series of 21 Prières. Nor can we forget the collection of all she said during the last months of her life. These sayings, of which there are several editions, known as the Novissima verba, have also been given the title Derniers Entretiens.