Teachings of Opus Dei are the teachings of the founder of Opus Dei, St. Josemaría Escrivá de Balaguer. The following are the main features of Escrivá's spiritual teachings, the basis of the message Opus Dei was tasked to spread. Another exposition of these main teachings, expressed as "the main features of the spirit of Opus Dei," can be found in the Opus Dei website. In his Apostolic Constitution Ut Sit, John Paul II declared that "this Institution has in fact striven, not only to illuminate with new lights the mission of the laity in the Church and in society, but also to put it into practice; it has also endeavored to put into practice the teaching of the universal call to holiness, and to promote at all levels of society the sanctification of ordinary work, and by means of ordinary work."