This book contains the substance of a course of lectures recently given by the writer in the Queen Street Hall, Edinburgh. Its purpose is to indicate the Natural Principles governing the relation between Mental Action and Material Conditions, and thus to afford the student an intelligible starting-point for the practical study of the subject.
o the standpoint where he is able to realize that such a law exists. His evolution in the future must be by conscious participation in the great work, and this can only be effected by his own individual intelligence and effort. It is a process of intelligent growth. No one else can grow for us: we must each grow for ourselves; and this intelligent growth consists in our increasing recognition of the universal law, which has brought us as far as we have yet got, and of our own individual relation to that law, based upon the fact that we ourselves are the most advanced product of it. It is a great maxim that Nature obeys us precisely in proportion as we first obey Nature. Let the electrician try to go counter to the principle that electricity must always pass from a higher to a lower potential and he will effect nothing; but let him submit in all things to this one fundamental law, and he can make whatever particular applications of electrical power he will.
These considerations show us that what differe