The rainbow is such a remarkable phenomenon of nature, and its cause has been so meticulously sought after by inquiring minds throughout the ages, that I could not choose a more appropriate subject for demonstrating how, with the method I am using, we can arrive at knowledge not possessed at all by those whose writings are available to us.
Rene DescartesEverybody thinks himself so well supplied with common sense that even those most difficult to please. . . never desire more of it than they already have.
Rene Descartes