Theosophy explains to us the laws under which this school-life must be lived, and in that way gives a great advantage to its students. The first great law is that of evolution. Every man has to become a perfect man, to unfold to the fullest degree the divine possibilities which lie latent within him, for that unfoldment is the object of the entire scheme so far as he is concerned. This law of evolution steadily presses him onward to higher and higher achievements. The wise man tries to anticipate its demands--to run ahead of the necessary curriculum, for in that way he not only avoids all collision with it, but he obtains the maximum of assistance from its action. The man who lags behind in the race of life finds its steady pressure constantly constraining him--a pressure which, if resisted, rapidly becomes painful. Thus the laggard on the path of evolution has always the sense of being hunted and driven by his fate, while the man who intelligently co-operates is left perfectly free to choose the direction in which he shall move, so long as it is onward and upward. The second great law under which this evolution is taking place is the law of cause and effect. There can be no effect without its cause, and every cause must produce its effect. They are in fact not two but one, for the effect is really part of the cause, and he who sets one in motion sets the other also. There is in Nature no such idea as that of reward or punishment, but only of cause and effect. Anyone can see this in connection with mechanics or chemistry; the clairvoyant sees it equally clearly with regard to the problems of evolution. The same law obtains in the higher as in the lower worlds; there, as here, the angle of reflection is always equal to the angle of incidence. It is a law of mechanics that action and reaction are equal and opposite. In the almost infinitely finer matter of the higher worlds the reaction is by no means always instantaneous; it may sometimes be spread over long periods of time, but it returns inevitably and exactly. Just as certain in its working as the mechanical law in the physical world is the higher law, according to which the man who sends out a good thought or does a good action receives good in return, while the man who sends out an evil thought or does an evil action, receives evil in return with equal accuracy--once more, not in the least a reward or punishment administered by some external will, but simply as the definite and mechanical result of his own activity. Man has learnt to appreciate a mechanical result in the physical world, because the reaction is usually almost immediate and can be seen by him. He does not invariably understand the reaction in the higher worlds because that takes a wider sweep, and often returns not in this physical life, but in some future one.