During his eleven year pontificate Pope St. Pius X wrote 16 encyclicals. The subjects ranged from saints, The Immaculate Conception, The Restoration of All Things in Christ, Catholic Social Action, and more. This is collection of 14 out of the 16 encyclicals that he authored. His most well known encyclical, Pascendi, has been recorded separately, and can be found at this link here: Pascendi Dominici Gregis

During a relatively short pontificate Pope Pius X devoted much of his time to dealing with issues related to the rapid spread of secularism in the early Twentieth century. Pius eschewed the liberal approach of his immediate predecessor, Leo XIII, favouring instead the strict doctrinal guidelines established by Pope Pius IX in the Syllabus of Errors . Pius X defined the root cause of the decline of the influence of the Catholic Church to be Modernism, a philosophical and artistic movement which came to prominence in the later Nineteenth Century...