The law of life works even though the educated man knows nothing of that law. -BJ Palmer, DC
This quote is a very broad statement, however I cannot think of a situation in which this does not hold true. No matter how much a person knows or does know know, the laws of life continue to work. What BJ was referring to in this quote was specifically the laws that cause man to live and thrive.
He believed, and was correct, that there are laws that govern the inner workings of the human body. We could try to understand them, however even if we are not able to understand these laws completely, they still work.
Furthermore, and more importantly I will say this:
Man’s knowledge of the laws of life can and should help us understand how to live a reasonably healthy existence. -Matthew Mix, DC