CHAP. XII. _An examination of the Opinion which pretends that the System of Fatalism is dangerous._ For a being whose essence obliges him to have a constant tendency to his own conservation, to continually seek to render himself happy, experience is indispensible: without it he cannot discover truth, which is nothing more, as has been already said, than a knowledge of the constant relations which subsist between man, and those objects that act upon him; according to his experience he denominates those that contribute to his permanent welfare useful and salutary; those that procure him pleasure, more or less durable, he calls agreeable. Truth itself becomes the object of his desires, only when he believes it is useful; he dreads it, whenever he presumes it will injure him. But has truth the power to injure him? Is it possible that evil can result to man from a correct understanding of the relations he has with other beings? Can it be true, that he can be harmed by becoming acquainted with those things, of which, for his own happiness, he is interested in having a knowledge? No: unquestionably not. It is upon its utility that truth founds its worth; upon this that it builds its rights; sometimes it may be disagreeable to individuals--it may even appear contrary to their interests--but it will ever be beneficial to them in the end; it will always be useful to the whole human species; it will eternally benefit the great bulk of mankind; whose interests must for ever remain distinct from those of men, who, duped by their own peculiar passions, believe their advantage consists in plunging others into error. _Utility_, then, is the touchstone of his systems, the test of his opinions, the criterion of the actions of man; it is the standard of the esteem, the measure of the love he owes to truth itself: the most useful truths are the most estimable: those truths which are most interesting for his species, he styles _eminent_; those of which the utility limits itself to the amusement of some individuals who have not correspondent ideas, similar modes of feeling, wants analogous to his own, he either disdains, or else calls them _barren_.