One of the great mystics
St. Teresa of Ávila, also called Saint Teresa of Jesus, original name Teresa de Cepeda y Ahumada, (born March 28, 1515, Ávila, Spain—died October 4, 1582, Alba de Tormes; canonized 1622; feast day October 15), Spanish nun, one of the great mystics and religious women of the Roman Catholic Church, and author of spiritual classics. She was the originator of the Carmelite Reform, which restored and emphasized the austerity and contemplative character of primitive Carmelite life. St. Teresa was elevated to doctor of the church in 1970 by Pope Paul VI, the first woman to be so honored.
Spanish Catholic priest
John of the Cross (born Juan de Yepes y Álvarez; Spanish: Juan de la Cruz; 24 June 1542 — 14 December 1591), venerated as Saint John of the Cross, was a Spanish Catholic priest, mystic, and a Carmelite friar of converso origin. He is a major figure of the Counter-Reformation in Spain, and he is one of the thirty-six Doctors of the Church. John of the Cross is known especially for his writings. He was mentored by and corresponded with the older Carmelite, Teresa of Ávila. Both his poetry and his studies on the development of the soul are considered the summit of mystical Spanish literature and among the greatest works of all Spanish literature.
German philosopher
Stein, Edith (1891–1942), German philosopher. Born in Breslau, of an Orthodox Jewish family, Edith Stein studied philosophy under Edmund Husserl at Goettingen and then became his first assistant at Freiburg University. Her dissertation, Zum Problem der Einfuehlung (1917; On the Problem of Empathy, 1964), played an important role in the phenomenological movement. She also prepared some of Husserl's works for publication. In 1922, after reading the autobiography of St. Theresa of Avila, she converted to Catholicism, gave up her university post, and went to teach at a Dominican girls' school in Speyer.
French Discalced Carmelite
Elizabeth of the Trinity (French: Élisabeth de la Trinité), born Élisabeth Catez (18 July 1880 – 9 November 1906), was a French Discalced Carmelite professed religious in addition to being a mystic and a spiritual writer. She was known for the depth of her spiritual growth as a Carmelite as well as bleak periods in which her religious calling was perceived to be unsure according to those around her; she however was acknowledged for her persistence in pursuing the will of God and in devoting herself to the charism of the Carmelites.