"A man is directed to make a garden in a bad soil overrun with sour grasses. The Lord of the land roots out the weeds, sows seeds, and plants herbs and fruit-trees. The gardener must then care for them and water them, that they may thrive and blossom, and that the Lord may find pleasure in his garden and come to visit it. There are four ways in which the watering may be done. There is water which is drawn wearily by hand from the well. There is water drawn by the ox-wheel, more abundantly and with greater labour. There is water brought in from the river, which will saturate the whole ground; and, last and best, there is rain from heaven. Four sorts of prayer correspond to these. The first is a weary effort with small returns; the well may run dry: the gardener then must weep. The second is internal prayer and meditation upon God; the trees will then show leaves and flower-buds. The third is love of God. The virtues then become vigorous. We converse with God face to face. The flowers open and give out fragrance. The fourth kind cannot be described in words. Then there is no more toil, and the seasons no longer change; flowers are always blowing, and fruit ripens perennially. The soul enjoys undoubting certitude; the faculties work without effort and without consciousness; the heart loves and does not know that it loves; the mind perceives, yet does not know that it perceives. If the butterfly pauses to say to itself how prettily it is flying, the shining wings fall off, and it drops and dies. The life of the spirit is not our life, but the life of God within us."