But the progress towards higher intelligence is always in the direction of narrowing down this margin of accident and taking the individual more and more out of the law of averages, and substituting the law of individual selection. In ordinary scientific language this is the survival of the fittest. The reproduction of fish is on a scale that would choke the sea with them if every individual survived; but the margin of destruction is correspondingly enormous, and thus the law of averages simply keeps up the normal proportion of the race. But at the other end of the scale, reproduction is by no means thus enormously in excess of survival. True, there is ample margin of accident and disease cutting off numbers of human beings before they have gone through the average duration of life, but still it is on a very different scale from the premature destruction of hundreds of thousands as against the survival of one. It may, therefore, be taken as an established fact that in proportion as intelligence advances the individual ceases to be subject to a mere law of averages and has a continually increasing power of controlling the conditions of his own survival. We see, therefore, that there is a marked distinction between the cosmic intelligence and the individual intelligence, and that the factor which differentiates the latter from the former is the presence of _individual_ volition. Now the business of Mental Science is to ascertain the relation of this individual power of volition to the great cosmic law which provides for the maintenance and advancement of the race; and the point to be carefully noted is that the power of individual volition is itself the outcome of the cosmic evolutionary principle at the point where it reaches its highest level. The effort of Nature has always been upwards from the time when only the lowest forms of life peopled the globe, and it has now culminated in the production of a being with a mind capable of abstract reasoning and a brain fitted to be the physical instrument of such a mind. At this stage the all-creating Life-principle reproduces itself in a form capable of recognizing the working of the evolutionary law, and the unity and continuity of purpose running through the whole progression until now indicates, beyond a doubt, that the place of such a being in the universal scheme must be to introduce the operation of that factor which, up to this point, has been, conspicuous by its absence--the factor, namely, of intelligent individual volition. The evolution which has brought us up to this standpoint has worked by a cosmic law of averages; it has been a process in which the individual himself has not taken a conscious part. But because he is what he is, and leads the van of the evolutionary procession, if man is to evolve further, it can now only be by his own conscious co-operation with the law which has brought him up to the standpoint where he is able to realize that such a law exists.