Two kinds of prayer…

Such is the difference between the two kinds of prayer. The water running through the aqueducts resembles sensible devotion, which is obtained by meditation. We gain it by our thoughts, by meditating on created things, and by the labour of our minds. In short, it is the result of our endeavors, and so makes the commotion I spoke of, while profiting the soul. The other fountain, like divine consolations, receives the water from the source itself, which signifies God.
–Saint Teresa of Avila (1515-1582)