St. Thomas Aquinas was born about the year 1225. The name Aquinas derived from the territory of his father, Count Landulf of Aquina, in the vicinity of Naples. The mother of Thomas was Theodora, Countess of Teano, and his family was related to the Emperors Henry VI and Frederick II, and to the Kings of France, Aragon, and Castile. "He could have quartered half the kingdoms of Europe in his shield," wrote Chesterton, "if he had not thrown away the shield. He was Italian and French and German and in every way European."

At the early age of five Thomas was sent to school at the Benedictine Monastery of Monte Cassino. He showed at once the great gifts of intellect with which he had been endowed. His biographers attest to the piety and inquiring nature of this young pupil, who would surprise his master with the oft repeated question: "What is God?" The early Benedictine training left Thomas with a life-long devotion to the Liturgy, and prepared him for further studies at the famed University of Naples where he was enrolled in or about the year 1239.

While at Naples Thomas met with the members of the Order Or St. Dominic, which had been founded some twenty years earlier. He made known his desire to be a Dominican about 1240, and instantly met with strong opposition from his family, but especially from his mother. At length he received the Dominican habit in April, 1244, and was chosen to continue his studies at the Dominican school of studies at the University of Paris.

Countess Theodora completely disapproved of this journey, and sent two of her sons and a detachment of soldiers to intercept Friar Thomas on his way to Paris. In this she was successful, and for nearly two years he was held a virtual prisoner in the family castle. This period was well spent by Thomas in study and meditation. Here he was constantly urged to forsake his vocation, and on one occasion he was tempted by a woman who had been thrust into his chamber by his own brothers. Thomas arose and grasping a burning brand from the fire, forced the temptress from his room. Then with characteristic vigour he burned deep in the door the potent sign of the cross. In later years he confided to his secretary and companion, Reginald of Piperno, that immediately after this event he as granted his urgent prayer for the gift of perpetual chastity, and thereafter had complete freedom from the motions of concupiscence. It seems probable that this gave first basis for his title of Angelic Doctor.

In 1245 St. Thomas began to attend the lectures in theology of St. Albert the Great at the University of Paris. He made extraordinary progress in his studies, and three years later he accompanied St. Albert to Cologne there to continue his study. He was engaged n teaching in 1250. This same year marks his ordination to the priesthood. Thomas accompanied his teacher, Albert the Great, back to Paris in 1252, where he continued his lecturing and at the same time prepared for the examinations for the degree of Master of Theology. He was awarded the degree in 1257 from the University of Paris. He continued to lecture at this world-famous institution during these early years in his career, which was marked by developing intellectual power and originality and growing familiarity with the vast field of theological and philosophical learning.

St. Thomas was called to Rome in 1259, and for nine busy years was teaching, lecturing, and writing as the theologian of the Papal Court. He continued his study of Aristotle, and was deeply engrossed in the literature of the Fathers of the Church. "He worked with the spirit of a missionary," says Martian, "in the cause of Truth against error." His chief writings of this period were a number of philosophical works, commentaries on various Books of the Old and New Testaments, theological disputations; above all, in 1267 or 1268 he completed the First Part of his masterpiece, the "Summa Theologica."

St. Thomas was already widely known as a great theologian and scholar in this century which abounded in great theologians and scholars. Recalled to Paris to replace a stricken Master of Theology at the University, he began the last period of his life. He was to live less than six more years. They were crowded years of writing, teaching, and preaching. His Sermons, which fill a good-sized volume, were begun in the early years of his priestly life, and he continued to preach until his death. He was an authority on the spiritual life, and personally experienced the trials and consolations of the trained ascetic and the true contemplative. His writings on ascetic and mystical theology are original and permanent contributions to the science of the Saints. It is related of him that, after having written the sublime treatise on the Holy Eucharist, he was seen to fall into an ecstasy, and a voice from the crucifix above the altar was heard to say: "Thou hast written well of Me, Thomas. What reward wilt thou have?" To this the Saint replied: "None, Lord, other than Thyself."

Thomas remained in Paris for three years, from 1269 to 1272, in the full maturity of his powers and the manifold outpourings of his genius. All of the Second Part of the "Summa Theologica" was written at this time, and the Third Part was begun. In 1272 he was recalled to Naples by order of the king to teach at the University of Naples which he had attended as a boy. He put the finishing touches on his numerous projects, completed the Third Part of the "Summa" up to Question XC, and then laid down his pen already worn out at the early age of 48. "I can do no more," he said on the morning of December 6, 1273. He had experienced an ecstasy during Mass and said to Reginald, his secretary: "Such secrets have been revealed to me that all I have written now appears of little value." During the following Lenten season, Thomas gave to the students and townsfolk of Naples the series of catechetical instructions on the Creed, Commandments, and Prayer which make up part of this volume. They are his last words. He died on March 7, 1274, at Fossanuova in Northern Italy while on his way to attend the Council of Lyons. St. Thomas Aquinas lived in an age of great scholars and great Saints. He is the "prince and Master of all."

St. Thomas was canonised in 1323. St. Pius proclaimed him a Doctor of the Universal Church in 1567. When Pope Leo XIII wrote his famous Encyclical, "Aeterni Patris," on the restoration of Christian philosophy, he urged his readers with all the force of his apostolic office "to restore the golden wisdom of St. Thomas and to spread it far and wide for the defense and beauty of the Catholic Faith, for the good of society, and for the advantage of all sciences." The same Pontiff, in a Brief dated August 4, 1880, designated St. Thomas Patron of all Catholic universities, and his successors, including Pope Pius XI, have ordered Catholic teachers to make the explanations of Christian Doctrine by St. Thomas the basis for all their teaching.

More Links to the Life of St. Thomas
http://www.ccel.org/a/aquinas/aquinas.html

A Prayer to St. Thomas Aquinas

Angelic Doctor, St. Thomas, prince of theologians and model of philosophers, bright ornament of the Christian world, light of the Church and patron of all Catholic schools, who didst learn wisdom without guile and dost communicate it without envy, pray for us to the Son of God, who is Wisdom itself, that by the coming of the Spirit of Wisdom upon us, we may clearly understand that which thou didst teach, and by imitating thee, may bring to completion that which thou didst do; that we may be made partakers both of thy doctrine and thy holiness; whereby thou didst shine on earth even as the sun; and finally, that we may enjoy with thee in heaven forever more, the most delectable fruits of the same, praising together with Thee Divine Wisdom through endless ages. Amen.