Now we know only a few laws, and our result is vitiated, not, of course, by any confusion or irregularity in Nature, but by our ignorance of essential elements in the calculation.

• 现在我们只知道少数的规律，我们的结论往往荒谬，自然罗，这并不是因为大自然不规则，或混乱，这是因为我们在计算之中，对于某些基本的原理，还是无知之故。