THREE:But of far greater historical interest than such criticism is that of Ramsay, the Scotch poet and painter, to whom a copy of Beccarias treatise had been shown by Diderot, and who wrote a letter about it to the latter, which, though it contains some very just criticisms on Beccaria, yet reads for the most part very curiously by the light of subsequent history, and illustrates graphically the despair of all reform then felt by most men of reflection.[8]The lighting of a city by night at the public expense; the distribution of guards in the different quarters; simple moral discourses on religion, but only in the silent and holy quiet of churches, protected by public authority; speeches on behalf of private and public interests in national assemblies, parliaments, or wherever else the majesty of sovereignty residesall these are efficacious means for preventing the dangerous condensation of popular passions. These means are a principal branch of that magisterial vigilance which the French call police; but if this is exercised by arbitrary laws, not laid down in a code of general circulation, a door is opened to tyranny,[221] which ever surrounds all the boundaries of political liberty. I find no exception to this general axiom, that Every citizen ought to know when his actions are guilty or innocent. If censors, and arbitrary magistrates in general, are necessary in any government, it is due to the weakness of its constitution, and is foreign to the nature of a well organised government. More victims have been sacrificed to obscure tyranny by the uncertainty of their lot than by public and formal cruelty, for the latter revolts mens minds more than it abases them. The true tyrant always begins by mastering opinion, the precursor of courage; for the latter can only show itself in the clear light of truth, in the fire of passion, or in ignorance of danger.