THREE:The credibility, therefore, of a witness must diminish in proportion to the hatred, friendship, or close connection between himself and the accused. More than one witness is necessary, because, so long as one affirms and another denies, nothing is proved, and the right which everyone has of being held innocent prevails.[140] The credibility of a witness becomes appreciably less, the greater the atrocity of the crime imputed,[66] or the improbability of the circumstances, as in charges of magic and gratuitously cruel actions. It is more likely, as regards the former accusation, that many men should lie than that such an accusation should be true, because it is easier for many men to be united in an ignorant mistake or in persecuting hatred than for one man to exercise a power which God either has not conferred or has taken away from every created being. The same reasoning holds good also of the second accusation, for man is only cruel in proportion to his interest to be so, to his hatred or[141] to his fear. Properly speaking, there is no superfluous feeling in human nature, every feeling being always in strict accordance with the impressions made upon the senses. In the same way the credibility of a witness may sometimes be lessened by the fact of his being a member of some secret society, whose purposes and principles are either not well understood or differ from those of general acceptance; for such a man has not only his own passions but those of others besides.Such contradictions between the laws of a family and the fundamental laws of a State are a fertile[238] source of other contradictions between public and private morality, giving rise consequently to a perpetual conflict in every individual mind. For whilst private morality inspires fear and subjection, public morality teaches courage and freedom; whilst the former inculcates the restriction of well-doing to a small number of persons indiscriminately, the latter inculcates its extension to all classes of men; and whilst the one enjoins the constant sacrifice of self to a vain idol, called the good of the family (which is frequently not the good of any single member that composes it), the other teaches men to benefit themselves, provided they break not the laws, and incites them, by the reward of enthusiasm, which is the precursor of their action, to sacrifice themselves to the good of their country. Such contradictions make men scorn to follow virtue, which they find so complicated and confused, and at that distance from them, which objects, both moral and physical, derive from their obscurity. How often it happens that a man, in reflecting on his past actions, is astonished at finding himself dishonest. The larger society grows, the smaller fraction of the whole does each member of it become, and the more is the feeling of the commonwealth diminished, unless care be taken by the laws to reinforce it. Societies, like human bodies, have their circumscribed limits, extension beyond which involves inevitably a disturbance of their[239] economy. The size of a State ought apparently to vary inversely with the sensibility of its component parts; otherwise, if both increase together, good laws will find, in the very benefit they have effected, an obstacle to the prevention of crimes. Too large a republic can only save itself from despotism by a process of subdivision, and a union of the parts into so many federative republics. But how effect this, save by a despotic dictator with the courage of Sylla and as much genius for construction as he had for destruction? If such a man be ambitious, the glory of all the ages awaits him; and if he be a philosopher, the blessings of his fellow-citizens will console him for the loss of his authority, even should he not become indifferent to their ingratitude. In proportion as the feelings which unite us to our own nation are weakened, do those for the objects immediately around us gain in strength; and it is for this reason that under the severest despotism the strongest friendships are to be found, and that the family virtues, ever of an exalted character, are either the most common or the only ones. It is evident, therefore, how limited have been the views of the great majority of legislators.
