THE design of this Treatise is, not to stroak and tickle the Fancy, but to elevate the Soul, and refine its Apprehensions, to inform the Judgment, and polish it for Conversation, to purifie and enflame the Heart, to enrich the Mind, and guide Men (that stand in need of help) in the way of Vertue; to excite their Desire, to encourage them to Travel, to comfort them in the Journey, and so at last to lead them to true Felicity, both here and hereafter.

I need not treat of Vertues in the ordinary way, as they are Duties enjoyned by the Law of GOD; that the Author of The whole Duty of Man hath excellently done: nor as they are Prudential Expedients and Means for a mans Peace and Honour on Earth; that is in some measure done by the French Charron of Wisdom. My purpose is to satisfie the Curious and Unbelieving Soul, concerning the reality, force, and efficacy of Vertue; and having some advantages from the knowledge I gained in the nature of Felicity (by many years earnest and diligent study) my business is to make as visible, as it is possible for me, the lustre of its Beauty, Dignity, and Glory: By shewing what a necessary Means Vertue is, how sweet, how full of Reason, how desirable in it self, how just and amiable, how delightful, and how powerfully conducive also to Glory: how naturally Vertue carries us to the Temple of Bliss, and how immeasurably transcendent it is in all kinds of Excellency.

And (if I may speak freely) my Office is, to carry and enhance Vertue to its utmost height, to open the Beauty of all the Prospect, and to make the Glory of GOD appear, in the Blessedness of Man, by setting forth its infinite Excellency: Taking out of the Treasuries of Humanity those Arguments that will discover the great perfection of the End of Man, which he may atchieve by the capacity of his Nature: As also by opening the Nature of Vertue it self, thereby to display the marvellous Beauty of Religion, and light the Soul to the sight of its Perfection.