In those terrible convulsions that sometimes agitate political societies, shake their foundations, and frequently produce the overthrow of an empire; there is not a single action, a single word, a single thought, a single will, a single passion in the agents, whether they act as destroyers, or as victims, that is not the necessary result of the causes operating; that does not act, as, of necessity, it must act, from the peculiar essence of the beings who give the impulse, and that of the agents who receive it, according to the situation these agents fill in the moral whirlwind. This could be evidently proved by an understanding capacitated to rate all the action and re-action, of the minds and bodies of those who contributed to the revolution. In fact, if all be connected in Nature, if all motion be produced, the one from the other, notwithstanding their secret communications frequently elude our sight; we ought to feel convinced of this truth, that there is no cause, however minute, however remote, that does not sometimes produce the greatest and most immediate effects on man. It may, perhaps, be in the parched plains of Lybia, that are amassed the first elements of a storm or tempest, which, borne by the winds, approach our climate, render our atmosphere dense, and thus operating on the temperament, may influence the passions of a man, whose circumstances shall have capacitated him to influence many others, who shall decide after his will the fate of many nations. Man, in fact, finds himself in Nature, and makes a part of it: he acts according to laws, which are appropriate to him; he receives in a manner more or less distinct, the action and impulse of the beings who surround him; who themselves act after laws that are peculiar to their essence. Thus he is variously modified; but his actions are always the result of his own energy, and that of the beings who act upon him, and by whom he is modified. This is what gives such variety to his determinations--what generally produces such contradiction in his thoughts, his opinions, his will, his actions; in short, in that motion, whether concealed or visible, by which he is agitated. We shall have occasion, in the sequel, to place this truth, at present so much contested, in a clearer light: it will be sufficient for our purpose at present to prove, generally, that every thing in Nature is necessary--that nothing to be found in it can act otherwise than it does.