We have already recognized at the outset that the Wisdom of this book is not merely an intellectual account of the reason of things, but also more specifically an explanation of the moral and spiritual life. It may be granted that so far as the Intellect alone claims satisfaction it is enough to posit the bare idea of God as the condition of all rational existence. But when men come to recognize themselves as Spiritual Beings, with conceptions of right and wrong, with strong affections, with soaring aspirations, with ideas which lay hold of Eternity, they find themselves quite incapable of being satisfied with the bare idea of God; the soul within them pants and thirsts for a _living_ God. An intellectual love of God might satisfy purely intellectual creatures; but to meet the needs of man as he is, God must be a God that manifests His own personality, and does not leave Himself without a witness to His rational creature. A wisdom, then, that is to truly appraise and rightly guide the life of man must start with the recognition of a God whose peculiar designation is the Self-existent One, and who makes Himself known to man by that name; that is, it must start with the "fear of _the Lord_."[8] How cogent this necessity is appears directly the alternative is stated. If Reason assures us of a God that made us, a First Cause of our existence and of our being what we are; if Reason also compels us to refer to Him our moral nature, our desire of holiness, and our capacity of love, what could be a greater tax on faith, and even a greater strain on the reason, than to declare that, notwithstanding, God has not revealed Himself as the Lord of our life and the God of our salvation, as the authority of righteousness or the object of our love? When the question is stated in this way it appears that apart from a veritable and trustworthy revelation there can be no wisdom which is capable of really dealing with human life, as the life of spiritual and moral creatures; for a God who does not reveal Himself would be devoid of the highest qualities of the human spirit, and the belief in a God who is inferior to man, a Creator who is less than the creature, could furnish no foundation for an intelligible system of thought.