Man understands things with the theoretical form, with the practical form he changes them; with the one he appropriates the universe, with the other he creates it. But the first form is the basis of the second; and the relation of _double degree_, which we have already found existing between aesthetic and logical activity, is repeated between these two on a larger scale. Knowledge independent of the will is thinkable; will independent of knowledge is unthinkable. Blind will is not will; true will has eyes. How can we will, without having before us historical intuitions (perceptions) of objects, and knowledge of (logical) relations, which enlighten us as to the nature of those objects? How can we really will, if we do not know the world which surrounds us, and the manner of changing things by acting upon them? [Sidenote] _Objections and elucidations._ It has been objected that men of action, practical men in the eminent sense, are the least disposed to contemplate and to theorize: their energy is not delayed in contemplation, it rushes at once into will. And conversely, that contemplative men, philosophers, are often very mediocre in practical matters, weak willed, and therefore neglected and thrust aside in the tumult of life. It is easy to see that these distinctions are merely empirical and quantitative. Certainly, the practical man has no need of a philosophical system in order to act, but in the spheres where he does act, he starts from intuitions and concepts which are most clear to him. Otherwise he could not will the most ordinary actions. It would not be possible to will to feed oneself, for instance, without knowledge of the food, and of the link of cause and effect between certain movements and certain organic sensations. Rising gradually to the more complex forms of action, for example to the political, how could we will anything politically good or bad, without knowing the real conditions of society, and consequently the means and expedients to be adopted? When the practical man feels himself in the dark about one or more of these points, or when he is seized with doubt, action either does not begin or stops. It is then that the theoretical moment, which in the rapid succession of human actions is hardly noticed and rapidly forgotten, becomes important and occupies consciousness for a longer time. And if this moment be prolonged, then the practical man may become Hamlet, divided between desire for action and his small amount of theoretical clarity as regards the situation and the means to be employed. And if he develop a taste for contemplation and discovery, and leave willing and acting, to a more or less great extent, to others, there is formed in him the calm disposition of the artist, of the man of science, or of the philosopher, who are sometimes unpractical or altogether blameworthy. These observations are all obvious. Their exactitude cannot be denied. Let us, however, repeat that they are