By frequent repetition of if, but, and perhaps, we succeed in forming an imperfect and broken system which perplexes men's minds to the extent of making them forget the clearest notions, and to render uncertain the most palpable truths. By the aid of this systematic nonsense, all nature has become an inexplicable enigma for man; the visible world has disappeared to give place to invisible regions; reason is obliged to give place to imagination, which can lead us only to the land of chimeras which she herself has invented.