Saint Thomas Aquinas (1225–1274) was a Catholic priest in the Dominican order and one of the most important Medieval philosophers and theologians. He is patron saint of all universities and of students. His feast day is January 28. He was canonized in 1323 and declared a Doctor of the Church in 1567 by Pope Pius V.
Born in approximately 1225 to a noble family, in 1243 Aquinas joined the Dominicans of Naples. After making his profession at Naples, he studied at the University of Cologne under the celebrated Saint Albert the Great. After ordination, Aquinas received his doctoral degree at the University of Paris. A prolific writer of more than sixty works, Aquinas’s masterpiece is the Summa Theologica (Summary Treatise of Theology) (1265–1273).