Catholic Wisdom
"Listen, O my son, to the precepts of thy master, and incline the ear of thy heart, and cheerfully receive and faithfully execute the admonitions of thy loving Father, that by the toil of obedience thou mayest return to Him from whom by the sloth of disobedience thou hast gone away. ... We are, therefore, about to found a school of the Lord’s service, in which we hope to introduce nothing harsh or burdensome. But even if, to correct vices or to preserve charity, sound reason dictateth anything that turneth out somewhat stringent, do not at once flee in dismay from the way of salvation, the beginning of which cannot but be narrow. But as we advance in the religious life and faith, we shall run the way of God’s commandments with expanded hearts and unspeakable sweetness of love; so that never departing from His guidance and persevering in the monastery in His doctrine till death, we may by patience share in the sufferings of Christ, and be found worthy to be coheirs with Him of His kingdom."
—Saint Benedict, Rule, Prologue.