John Cassian

"Let waters from your own fountain flow in abundance for you, but let your waters pass through into your streets." And according to the prophet Isaiah, "You shall be like a watered garden and like a fountain of water whose waters shall not fail. And the places that have been desolate for ages shall be built in you; you shall raise up the foundations of generation and generation; and you shall be called the repairer of the fences, turning the paths into rest." And that blessedness shall come upon you which the same prophet promises: "And the Lord will not cause your teacher to flee away from you any more, and your eyes shall see your teacher. And your ears shall hear the word of one admonishing you behind your back. This is the way, walk in it, and go not aside either to the right hand or to the left." And so it will come to pass that not only every purpose and thought of our heart but also all the wanderings and rovings of your imagination will become to you a holy and unceasing pondering of the divine law.