And, notwithstanding, this principle is far from containing true ethics and the whole of ethics.
The principle of general interest leans towards disinterestedness, and this is certainly much; but disinterestedness is the condition of virtue, not virtue itself. We may commit an injustice with the most entire disinterestedness. From the fact that an action does not profit him who does it, it does not follow that it may not be in itself very unjust, in seeking general interest before all, we escape, it is true, that vice of soul which is called selfishness, but we may fall into a thousand iniquities. Or, indeed, it must be felt, that general interest is always conformed to justice. But these two ideas are not adequate to each other. If they very often go together, they are sometimes also separated. Themistocles proposed to the Athenians to burn the fleet of the allies that was in the port of Athens, and thus to secure to themselves the supremacy. The project is useful, says Aristides, but it is unjust, and on account of this simple speech, the Athenians renounce an advantage that must be purchased by an injustice. Observe that Themistocles had no particular interest in that; he thought only of the interest of his country. But, had he hazarded or given his life in order to engage the Athenians in such an act, he would only have been consecrating—what has often been seen—an admirable devotion to a course in itself immoral.
To this it is replied, that if, in the example cited, justice and interest exclude each other, it is because the interest was not sufficiently general; and the celebrated maxim is arrived at, that one must sacrifice himself to his family, his family to the city, the city to country, country to humanity, that, in fine, the good is the interest of the greatest number.[206]
When you have gone thus far, you have not yet attained even the idea of justice. The interest of humanity, like that of the individual, may accord in fact with justice, for in that there is certainly no incompatibility, but the two things are none the more identical, so that we cannot say with exactness that the interest of humanity is the foundation of justice. A single case, even a single hypothesis, in which the interest of humanity should not accord with the good, is sufficient to enable us to conclude that one is not essentially the other.
We go farther: if it is the interest of humanity that constitutes and measures justice, that only is unjust which this interest declares to be so. But you are not able to affirm absolutely, that, in any circumstance, the interest of humanity will not demand such or such an action; and if it demands it, by virtue of your principle, it will be necessary to do it, whatever it may be, and to do it inasmuch as it is just.
You order me to sacrifice particular interest to general interest. But in the name of what do you order me to do this? Is it in the name of interest? If interest, as such, must touch me, evidently my interest must also touch me, and I do not see why I should sacrifice it to that of others.
The supreme end of human life, you say, is happiness. I hence conclude very reasonably, that the supreme end of my life is my happiness.
In order to ask of me the sacrifice of my happiness, it must be called for by some other principle than happiness itself.
Consider to what perplexity this famous principle of the greatest good of the greatest number condemns me. I have already much difficulty in discerning my true interest in the obscurity of the future; by substituting for the infallible voice of justice the uncertain calculations of personal interest, you have not rendered action easy for me;[207] but it becomes impossible, if it is necessary to seek, before acting, what is the interest not only of myself, but of my family, not only of my family, but of my country, not only of my country, but of humanity. What! must I embrace the entire world in my foresight? What! is such the price of virtue? You impose upon me a knowledge that God alone possesses. Am I in his counsels so as to adjust my actions according to his decrees? The philosophy of history and the wisest diplomacy are not, then, sufficient for conducting ourselves well. Imagine, therefore, that there is no mathematical science of human life. Chance and liberty confound the profoundest calculations, overturn the best-established fortunes, relieve the most desperate miseries, mingle good fortune and bad, confound all foresight.
And would you establish ethics on a foundation so mobile? How much place you leave for sophism in that complaisant and enigmatical law of general interest![208] It will not be very difficult always to find some remote reason of general interest, which will excuse us from being faithful in the present moment to our friends, when they shall be in misfortune. A man in adversity addresses himself to my generosity. But could I not employ my money in a way more useful to humanity? Will not the country have need of it to-morrow? Let us virtuously keep it for the country then. Moreover, even where the interest of all seems evident, there still remains some chance of error; it is, therefore, better to withhold. It will always be wisdom to withhold. Yes, when it is necessary, in order to do well, to be sure of serving the greatest interest of the greatest number, none but the rash and senseless will dare to act. The principle of general interest will produce, I admit, great devotedness, but it will also produce great crimes. Is it not in the name of this principle that fanatics of every kind, fanatics in religion, fanatics in liberty, fanatics in philosophy, taking it upon themselves to understand the eternal interest of humanity, have engaged in abominable acts, mingled often with a sublime disinterestedness?