Now, not only is that true—and I mention that first because that is practically universally recognised by science now—but they may be artificially stimulated without the help of mesmerism at all. While that is a rough-and-ready way of doing it with anybody, the other means requires a consciousness unfolded to the point where the fact of these senses is recognised as probable, and then a deliberate and sustained effort to bring these senses into working order. Now that is done by what is known generally as meditation, and meditation is only concentrated thinking. Anyone who is able to pay attention, any one who is able to think steadily on one subject for a little time without letting the mind wander, is ready to begin meditation; and most of all are those ready to begin it, although at first sight they might not look promising, who are capable of being seized upon by a single idea of a high and lofty character; which, as it were, takes possession of them, obsesses them if you will, so that they become martyrs, heroes for the idea which has gripped them. I do not say that is the highest state—it is not; it is not best to be possessed by the idea, but to possess the idea—that is a stage higher still. But the power of being possessed by an idea shows that you are climbing upwards towards the realms of the ideal; and many a man or woman who is marked out as a fanatic, as unwilling to be reasoned out of their foolish ideals, the dreamers of the world, the Utopians, the poets who dream of a coming golden age, those men and women who despise the present, sometimes irrationally, in the wild enthusiasm of the idea that has possessed them, they are treading on the threshold of that power of concentration of the mind which, when they have mastered their ideas, should carry them far on—on to the next stage in human progress. It is by meditation that these senses are artificially awakened; that is, you quicken the normal workings of evolution by knowing the laws of thought, and utilising them to bring about that which you desire. It is only artificial in the same sense that a cattle-breeder, when he wants to breed a particular type, uses those laws of nature that help him, and avoids or evades those that would hinder him. He clears out of his way all the opposing forces and energies, so that those he wants may have free play. So with the laws of mind; if you know the laws of mind, the laws by which consciousness evolves, then you can use them scientifically to develop in yourselves the highest powers of the mind, and use those powers of the mind to organise your subtler body, so that it may become a vehicle of consciousness, may be obedient to your will to know. That is already stirring within you; hence the nervous troubles that you have; but when you understand the law, you can evolve the finer nervous system without peril to health. Only this demands rules which many people kick against, a physical self-mastery that is not popular