"Now, pray, assume that this stone during its motion thinks and knows that it is striving to the best of its power to continue in motion. This stone which is conscious only of its striving and is by no means indifferent, will believe that it is absolutely free, and that it continues in motion for no other reason than its own will to continue. Now this is that human freedom which everybody claims to possess and which consists in nothing but this, that men are conscious of their desires, but ignorant of the causes by which they are determined. Thus the child believes that he desires milk of his own free will, the angry boy regards his desire for vengeance as free, and the coward his desire for flight. Again, the drunken man believes that he says of his own free will what, sober again, he would fain have left unsaid, and as this prejudice is innate in all men, it is difficult to free oneself from it. For, although experience teaches us often enough that man least of all can temper his desires, and that, moved by conflicting passions, he perceives the better and pursues the worse, yet he considers himself free because there are some things which he desires less strongly, and some desires which he can easily inhibit through the recollection of something else which it is often possible to recall." It is easy to detect the fundamental error of this view, because it is so clearly and definitely expressed. The same necessity by which a stone makes a definite movement as the result of an impact, is said to compel a man to carry out an action when impelled thereto by any cause. It is only because man is conscious of his action, that he thinks himself to be its originator. In doing so, he overlooks the fact that he is driven by a cause which he must obey unconditionally. The error in this train of thought is easily brought to light. Spinoza, and all who think like him, overlook the fact that man not only is conscious of his action, but also may become conscious of the cause which guides him. Anyone can see that a child is not free when he desires milk, nor the drunken man when he says things which he later regrets. Neither knows anything of the causes, working deep within their organisms, which exercise irresistible control over them. But is it justifiable to lump together actions of this kind with those in which a man is conscious not only of his actions but also of their causes? Are the actions of men really all of one kind? Should the act of a soldier on the field of battle, of the scientific researcher in his laboratory, of the statesman in the most complicated diplomatic negotiations, be placed on the same level with that of the child when he desires milk? It is, no doubt, true that it is best to seek the solution of a problem where the conditions are simplest. But lack of ability to see distinctions has before now caused endless confusion. There is, after all, a profound difference between knowing the motive of my action and not knowing it.