We all know the meaning of this phrase in our everyday life. The Spirit is that which gives life and movement to anything, in fact it is that which causes it to exist at all. The thought of the author, the impression of the painter, the feeling of the musician, is that without which their works could never have come into being, and so it is only as we enter into the IDEA which gives rise to the work, that we can derive all the enjoyment and benefit from it which it is able to bestow. If we cannot enter into the Spirit of it, the book, the picture, the music, are meaningless to us: to appreciate them we must share the mental attitude of their creator. This is a universal principle; if we do not enter into the Spirit of a thing, it is dead so far as we are concerned; but if we do enter into it we reproduce in ourselves the same quality of life which called that thing into existence. Now if this is a general principle, why can we not carry it to a higher range of things? Why not to the highest point of all? May we not enter into the originating Spirit of Life itself, and so reproduce it in ourselves as a perennial spring of livingness? This, surely, is a question worthy of our careful consideration. The spirit of a thing is that which is the source of its inherent movement, and therefore the question before us is, what is the nature of the primal moving power, which is at the back of the endless array of life which we see around us, our own life included? Science gives us ample ground for saying that it is not material, for science has now, at least theoretically, reduced all material things to a primary ether, universally distributed, whose innumerable particles are in absolute equilibrium; whence it follows on mathematical grounds alone that the initial movement which began to concentrate the world and all material substances out of the particles of the dispersed ether, could not have originated in the particles themselves. Thus by a necessary deduction from the conclusions of physical science, we are compelled to realize the presence of some immaterial power capable of separating off certain specific areas for the display of cosmic activity, and then building up a material universe with all its inhabitants by an orderly sequence of evolution, in which each stage lays the foundation for the development of the stage, which is to follow--in a word we find ourselves brought face to face with a power which exhibits on a stupendous scale, the faculties of selection and adaptation of means to ends, and thus distributes energy and life in accordance with a recognizable scheme of cosmic progression. It is therefore not only Life, but also Intelligence, and Life guided by Intelligence becomes Volition. It is this primary originating power which we mean when we speak of "The Spirit," and it is into this Spirit of the whole universe that we must enter if we would reproduce it as a spring of Original Life in ourselves.