I have said that Pythagoras acknowledged two motives of human actions, the power of the Will and the necessity of Destiny, and that he subjected both to one fundamental law called Providence from which they emanated alike. The first of these motives was free, and the second constrained: so that man found himself placed between two opposed, but not injurious natures, indifferently good or bad, according as he understood the use of them. The power of the Will was exercised upon the things to be done, or upon the future; the necessity of Destiny, upon the things done, or upon the past: and the one nourished the other unceasingly, by working upon the materials which they reciprocally furnished each other; for according to this admirable philosopher, it is of the past that the future is born, of the future that the past is formed, and of the union of both that is engendered the always existing present, from which they draw alike their origin: a most profound idea that the Stoics had adopted.[376] Thus, following this doctrine, liberty rules in the future, necessity in the past, and Providence over the present. Nothing that exists happens by chance but by the union of the fundamental and providential law with the human will which follows or transgresses it, by operating upon necessity.[377] The harmony of the Will and Providence constitutes Good; Evil is born of their opposition. Man has received three forces adapted to each of the three modifications of his being, to be guided in the course that he should pursue on earth and all three enchained to his Will. The first, attached to the body, is instinct; the second, devoted to the soul, is virtue; the third, appertaining to intelligence, is science or wisdom. These three forces, indifferent in themselves, take this name only through the good usage that the Will makes of it; for, through bad usage they degenerate into brutishness, vice, and ignorance. Instinct perceives the physical good or evil resulting from sensation; virtue recognizes the moral good or evil existing in sentiment; science judges the intelligible good or evil which springs from assent. In sensation, good or evil is called pleasure or pain; in sentiment, love or hate; in assent, truth or error. Sensation, sentiment, and assent, dwelling in the body, in the soul, and in the spirit, form a ternary, which becoming developed under favour of a relative unity constitutes the human quaternary, or Man considered abstractly. The three affections which compose this ternary act and react upon one another, and become mutually enlightened or obscured; and the unity which binds them, that is to say, Man, is perfected or depraved, according as it tends to become blended with the Universal Unity or to become distinguished from it. The means that this ternary has of becoming blended with it, or of becoming distinguished from it, of approaching near or of drawing away from it, resides wholly in its Will, which, through the