Title: Rule of Saint Albert
Content:  The Rule of life given to the Carmelites by Saint Albert Avogadro between the years 1206 – 1214 was finally approved as the true and proper Rule of Carmel by Pope Innocent IV in 1247. All Carmelites must follow this official version today.
Title: Rule of Saint Albert
Content:  The eremitic Rule of Saint Albert is the shortest of the rules of consecrated life in existence of the Catholic spiritual tradition, and is composed almost exclusively of scriptural precepts. To this day it is a rich source of inspiration for the lives of many Catholics throughout the world.
Title: Rule of Saint Albert
Content:  Saint Albert Avogadro (1149–1214), a priest of the Canons Regular and a canon lawyer, wrote the Rule between 1206 and 1214 as the Catholic Latin Patriarch of Jerusalem. The Rule is directed to "Brother B.", held by tradition to be either Saint Bertold or Saint Brocard (but historical evidence of his identity is lacking), and the hermits living in the spirit of Elijah near the prophet's spring on Mount Carmel in present-day Israel. On 30 January 1226 Pope Honorius III approved it as their rule of life in the bull Ut vivendi normam.
Title: Secular Order of Discalced Carmelites
Content: The Rule of St. Albert and the Constitutions of the Secular Order of Discalced Carmelites (OCDS), 2003. 
Title: Albert of Vercelli
Content:  of what came to be called the Carmelite Rule of St. Albert. This order was based on Mount Carmel, across the Bay of Haifa from Acre where he resided as patriarch. Additionally he mediated in disputes between the Kingdom of Jerusalem and the Kingdom of Cyprus and between the Knights Templar and the Armenian Kingdom of Cilicia. In 1214 he had been invited to the Fourth Lateran Council, but the Master of the Hospital of the Holy Spirit, whom he had rebuked and deposed for immorality, stabbed him to death on 14 September while taking part in a procession  on the Feast of the Exaltation of the Holy Cross. He was succeeded by Raoul of Merencourt.
Title: Rule of Saint Albert
Content: develop the contemplative dimension of their life, in an open dialogue with God ; live full of charity ; meditate day and night on the Word of the Lord ; pray together or alone several times a day ; celebrate the Eucharist every day ; do manual work, as Paul the Apostle did ; purify themselves of every trace of evil ; live in poverty, placing in common what little they may have ; love the Church and all people ; conform their will to that of God, seeking the will of God in faith, in dialogue and through discernment. The Rule states that it is fundamental for a Carmelite to "live a life in allegiance to Jesus Christ – how, pure in heart and stout in conscience, must be unswerving in the service of the Master" (no. 2). To live a life of allegiance to Jesus Christ, the Carmelites bind themselves especially to:
Title: Carmelites
Content:  Saint Brocard, although written evidence is lacking. In the Carmelite rule, reference is made only to "Brother B." (in the introductory sentence of the rule) who asked the patriarch for a rule of life for hermits. Tradition has established that it was Saint Brocard, second prior General of the order, who asked the Latin Patriarch of Jerusalem, Albert, to provide the group of hermits with a written rule of life. This rule, dated 1209, is centered on prayer and defined the way of life of hermits. The first act of the Order of Brothers of The Blessed Virgin Mary of Mount Carmel was to dedicate a chapel to the Virgin Mary under the title of Mary, 
Title: Albert of Vercelli
Content:  Albert of Jerusalem (Albertus Hierosolymitanus, also Blessed Albert, Albert of Vercelli or Alberto Avogadro; died 14 September 1214) was a  canon lawyer. He was Bishop of Bobbio and Bishop of Vercelli, and served as mediator and diplomat under Pope Clement III. Innocent III appointed him Patriarch of Jerusalem in 1204 or 1205. In Jerusalem, he contributed the Carmelite Rule of St. Albert to the newly-founded Carmelite Order. He is honoured as a saint in the Roman Catholic Church and commemorated by the Carmelites on 17 September.
Title: Constitutions of the Carmelite Order
Content:  The Constitutions of the Carmelite Order stand as an expression of the ideals and spirit of the Order of Our Lady of Mount Carmel. Foundational sources for the Constitutions include the desert hermit vocation as exemplified in the life of the Prophet Elijah. For the Carmelite the contemplative vocation is exemplified par excellence in the life of the Virgin Mary, beloved to the Order under the title of Our Lady of Mount Carmel. Additionally, the Carmelite Rule of St. Albert and the Book of the First Monks comprise fundamental points of reference in the life and spirituality of the Order. Between the 13th and 16th centuries the Order lost much of its vigour. The reform led by Teresa of 
Title: Carmelites
Content:  the Order of the Great Carmelites in 1783 by Pope Pius VI. John Soreth, a brother from the Carmelite Convent of Caen, Prior General from 1451 to 1471, tried to convince his Brothers to lead a life more rigorous religious development by promoting the seeds and movements that already existed. His motto was "Return to the rule of Saint Albert". Its first decrees he protested against privileges and exemptions, a major cause of the decline of the order. The constitutions of the order dating from 1362 were revised and approved by the general chapter of Brussels in 1462. These constitutions insisted on "The divine office, the vow of poverty, silence and solitude, the guard of 

Question: Who is the author of Carmelite Rule of St. Albert?
Answer: Albert of Vercelli.
Albert Avogadro.
St. Alberto Avogadro.