asks Barry Cornwall. But now that we have entered upon a more advanced age in thought, as in all things pertaining to discovery and practical application, or invention, a critical defining intellectual age, we must henceforth depend upon true science for our progress toward a higher enlightenment. Science, as will be seen, embraces religion, and must become, as Keely asserts, the religion of the world, when it is made known in all its glory and grandeur, sweeping away all foot-holds for scepticism, and spreading the knowledge of God, as a God of love, until this knowledge covers the earth as the waters cover the sea. As has been said, the word science, in its largest signification, includes intellectual achievement in every direction open to the mind, and the co-ordination of the results in a progressive philosophy of life. Philosophy has been defined as the science of causes or of first principles, and should be limited, almost exclusively, to the mental sciences. This is the field which Keely is exploring; the knowledge of the "hidden things" which he is bringing to the light is pure philosophical knowledge, in the widest acceptation of the term: the knowledge of effects as dependent on their causes. "Behold an infinite of floating worlds Dividing crystal waves of ether pure In endless voyage without port." Is it not a marvel of inspiration to have been able to cast line and plummet in such a sea of knowledge, to be able to demonstrate the power of that "sympathetic outreach" which, acting from our satellite upon the waters of our oceans and seas, through the vast space that separates it from our earth, lifts these waters, once in every twenty-four hours, from their beds; and, as gently as a mother would lay her infant on its couch, places them again where they rest? God hath chosen, as Paul said, the foolish things of the world to confound the wise; and God hath chosen the weak things of the world to confound the things which are mighty, and base things of the world and things which are despised hath God chosen, yea, and things which are not to bring to naught things which are; that no flesh should glory in His presence. Christ said, "I thank Thee, O Father, Lord of heaven and earth, because Thou hast hid these things from the wise and prudent, and hast revealed them unto babes." Truth never changes; but as new truths are revealed to us, to meet the necessities of progress (in our development from ignorance into the wisdom of angels), our point of view is ever changing, like the landscape which we look out upon from the swiftly gliding railway-carriage that bears us to our destination. As yet, "Earth has shown us only the title-page of a book" that we may, if we will, read its first pages here, and continue reading throughout eternity.