David Hume,
Dialogues Concerning Natural Religion
“ But how oft do they break their bounds, and cause the greatest convulsions in society? There is nothing so advantageous in the universe, but what frequently becomes pernicious, by its excess or defect; nor has Nature guarded, with the requisite accuracy, against all disorder or confusion. The irregularity is never perhaps so great as to destroy any species; but is often sufficient to involve the individuals in ruin and misery. On the concurrence, then, of these four circumstances, does all or the greatest part of natural evil depend. ”
