The only thing required, then, is to exercise our reason in discriminating the various shades of what is right and wrong. Good and evil are often neighbors; our passions confound them; who shall enlighten and direct us? Ourselves, when we are calm and undisturbed. Whoever has written on the subject of human duties, in all countries throughout the world, has written well, because he wrote with reason. All have said the same thing; Socrates and Epictetus, Confucius and Cicero, Marcus Antoninus and Amurath II. had the same morality.
We would repeat every day to the whole of the human race: Morality is uniform and invariable; it comes from God: dogmas are different; they come from ourselves.
Jesus never taught any metaphysical dogmas; He wrote no theological courses; He never said: I am consubstantial; I have two wills and two natures with only one person. He left for the Cordeliers and the Jacobins, who would appear twelve hundred years after Him, the delicate and difficult topic of argument, whether His mother was conceived in original sin. He never pronounced marriage to be the visible sign of a thing invisible; He never said a word about concomitant grace; He instituted neither monks nor inquisitors; He appointed nothing of what we see at the present day.
God had given the knowledge of just and unjust, right and wrong, throughout all the ages which preceded Christianity. God never changed nor can change. The constitution of our souls, our principles of reason and morality, will ever be the same. How is virtue promoted by theological distinctions, by dogmas founded on those distinctions, by persecutions founded on those dogmas? Nature, terrified and horror-struck at all these barbarous inventions, calls aloud to all men: Be just, and not persecuting sophists.
You read in the "Zend-Avesta," which is the summary of the laws of Zoroaster, this admirable maxim: "When it is doubtful whether the action you are about to perform is just or unjust, abstain from doing it." What legislator ever spoke better? We have not here the system of "probable opinions", invented by people who call themselves "the Society of Jesus".
JUSTICE.
That "justice" is often extremely unjust, is not an observation merely of the present day; "summum jus, summa injuria," is one of the most ancient proverbs in existence. There are many dreadful ways of being unjust; as, for example, that of racking the innocent Calas upon equivocal evidence, and thus incurring the guilt of shedding innocent blood by a too strong reliance on vain presumptions.
Another method of being unjust is condemning to execution a man who at most deserves only three months' imprisonment; this species of injustice is that of tyrants, and particularly of fanatics, who always become tyrants whenever they obtain the power of doing mischief.
We cannot more completely demonstrate this truth than by the letter of a celebrated barrister, written in 1766, to the marquis of Beccaria, one of the most celebrated professors of jurisprudence, at this time, in Europe: