For instance, "the desire accomplished is sweet to the soul,"[408] yet no one can know how sweet but he who cherished the desire. When a man has laboured for many years to secure an adequate maintenance for his family, and at length finds himself in easy circumstances, with his children growing up around him well and happy, no one besides himself can in the least gauge the sense of satisfaction, contentment, and gratitude which animates his heart, because no one can realize without actual experience the long and anxious days, the sickening fears, the blighted hopes, the rigorous sacrifices, through which he passed to attain his end. Or, when an artist has been toiling for many years to realize upon canvas a vision of beauty which floats before the inward eye, and at last succeeds, by some happy combination of colours, or by some dexterous sweep of the brush, or by some half-inspired harmony of form and composition, in actually bodying forth to the senses that which has haunted his imagination, it is hopeless for any one else to understand the thrilling joy, the light-hearted ecstasy, which are hidden rather than expressed by the quiet flush on the cheek and the sparkling glance of the eye. The mystical joy of a love which has just won an answering love; the deep-toned joy of the mother in the dawning life of her child; the joy of the poet who feels all the beauty of the earth and the sky pulsing through his nerves and raising his heart to quick intuitions and melodious numbers; the joy of the student, when the luminous outlines of truth begin to shape themselves before his mind in connected form and startling beauty; the joy of one who has toiled for the restoration of lost souls, and sees the fallen and degraded awaking to a new life, cleansed, radiant and strong; the joy of the martyr of humanity, whose dying moments are lit with visions, and who hears through the mysterious silences of death the voices of those who will one day call him blessed,--joys like these may be described in words, but they who experience them know that the words are, relatively speaking, meaningless, and they who do not experience them can form no conception of them. "When the desire cometh it is a tree of life,"[409] which suddenly springs up in the garden of the heart, puts forth its jubilant leaves of healing, flashes with white wings of scented blossom, and droops with its full offering of golden fruit, as if by magic, and we are surprised ourselves that those around us do not see the wonder, do not smell the perfume, do not taste the fruit: we alone can sit under its branches, we alone can catch the murmur of the wind, the music of achievement, in its leaves.