It is the failure to observe this plain canon of style that has made shipwreck of many an attempt to construct liturgies _de novo_. Ambitious framers of forms of worship seem almost invariably to forget that there may be such a thing as a too exquisite prayer, an altogether too "eloquent address to the throne of grace." The longest and fullest supplicatory portion of the Prayer Book, the Litany, does not contain, from the first sentence to the last,[17] one single figurative expression, it is literally plain English from beginning to end; but could language be framed more intense, more satisfying, more likely to endure? Scriptural metaphor, whether because it comes to us with the stamp of authority or on account of some subtle intrinsic excellence, it may be difficult to say, does not pall upon the taste. And yet even this is used sparingly in the Prayer Book, some of the most striking exceptions to the general rule being afforded by the collects for the first and third Sundays in Advent, the collects for the Epiphany and Easter Even, and the opening prayer in the Baptismal Office. All these are instances of strictly Scriptural metaphor, and moreover it is to be kept in mind that they are designed for occasional, not constant use. In the orders for daily Morning and Evening Prayer, the "lost sheep" of the General Confession and the "dew" of God's blessing in the Collect for Clergy and People are almost the sole, if not the sole cases of evident metaphor, and these again are Scriptural. When in Jeremy Taylor's prayer, introduced by the American revisers into the Order for the Visitation of the Sick, we come upon the comparison of human life to a "vale of misery" we feel that somehow we have struck a new current in the atmosphere; for the moment it is the rhetorician who speaks, and no longer the earnest seeker after God. Besides this freedom from figures of speech, we notice in the style of Prayer Book English a careful avoidance of whatever looks like a metaphysical abstraction. The aim is ever to present God and divine things as realities rather than as mere concepts or notions of the mind. So far as the writer remembers, not a single prayer in the whole book begins with that formula so dear to the makers of extemporary forms of devotion, "O Thou." On the contrary, the approach to the Divine Majesty is almost always made with a reference to some attribute or characteristic that links Deity to man and man's affairs; it is "O God, the Protector of all that trust in thee," or "Almighty and everlasting God who of thy tender love toward mankind," or "Lord of all power and might who art the author and giver of all good things."