the immortal "Candide" of the great Voltaire; whereby certainly Leibnitz's often-repeated and lame excuse for the evil of the world, that the bad sometimes brings about the good, received a confirmation which was unexpected by him. Even by the name of his hero Voltaire indicates that it only requires sincerity to recognise the opposite of optimism. Really upon this scene of sin, suffering, and death optimism makes such an extraordinary figure that one would be forced to regard it as irony if one had not a sufficient explanation of its origin in the secret source of it (insincere flattery, with insulting confidence in its success), which, as was mentioned above, is so delight fully disclosed by Hume.
But indeed to the palpably sophistical proofs of Leibnitz that this is the best of all possible worlds, we may seriously and honestly oppose the proof that it is the worst of all possible worlds. For possible means, not what one may construct in imagination, but what can actually exist and continue. Now this world is so arranged as to be able to maintain itself with great difficulty; but if it were a little worse, it could no longer maintain itself. Consequently a worse world, since it could not continue to exist, is absolutely impossible: thus this world itself is the worst of all possible worlds. For not only if the planets were to run their heads together, but even if any one of the actually appearing perturbations of their course, instead of being gradually balanced by others, continued to increase, the world would soon reach its end. Astronomers know upon what accidental circumstances – principally the irrational relation to each other of the periods of revolution – this depends, and have carefully calculated that it will always go on well; consequently the world also can continue and go on. We will hope that, although Newton was of an opposite opinion, they have not miscalculated, and consequently that the mechanical perpetual motion realised in such a planetary system will not also, like the rest, ultimately come to a standstill. Again, under the firm
