Prayer purifies us, reading instructs us... If a man wants to be always in God's company, he must pray regularly and read regularly. When we pray, we talk to God; when we read, God talks to us.
--Saint Isidore of Seville
Without Prayer nothing good is done. God's works are done with our hands joined, and on our knees. Even when we run, we must remain spiritually kneeling before Him.
--Blessed Luigi Orione
Prayer reveals to souls the vanity of earthly goods and pleasures. It fills them with light, strength and consolation; and gives them a foretaste of the calm bliss of our heavenly home.
-- St Rose of Viterbo
We must pray without ceasing, in every occurrence and employment of our lives - that prayer which is rather a habit of lifting up the heart to God as in a constant communication with Him.
--Saint Elizabeth Ann Seton
Also, New advent has some sources that list some pre-reformation info:
Mental Prayer
Meditation is a form of mental prayer consisting in the application of the various faculties of the soul, memory, imagination, intellect, and will, to the consideration of some mystery, principle, truth, or fact, with a view to exciting proper spiritual emotions and resolving on some act or course of action regarded as God's will and as a means of union with Him. In some degree or other it has always been practised by God-fearing souls. There is abundant evidence of this in the Old Testament, as, for instance, in Ps. xxxviii, 4; lxii, 7; lxxvi, 13; cxviii throughout; Ecclus., xiv, 22; Is., xxvi, 9; lvii, 1; Jer., xii, 11. In the New Testament Christ gave frequent examples of it, and St. Paul often refers to it, as in Eph., vi, 18; Col., iv, 2; I Tim., iv, 15; I Cor., xiv, 15. It has always been practised in the Church.
Among others who have recommended it to the faithful as Chrysostom in his two books on prayer, as also in his "Hom. xxx in Gen." and "Hom. vi. in Isaiam"; Cassian in "Conference ix"; St. Jerome in "Epistola 22 ad Eustochium"; St. Basil in his "Homily on St. Julitta, M.", and "In regular breviori", 301; St. Cyprian, "In expositione orationis dominicalis"; St. Ambrose, "De sacramentis", VI, iii; St. Augustine, "Epist. 121 ad Probam", cc. v, vi, vii; Boctius, "De spiritu et anima", xxxii; St. Leo, "Sermo viii de jejunio"; St. Bernard, "De consecratione'", I, vii; St. Thomas, II-II, Q. lxxxiii, a. 2.
The link is here (
link)