The simplest case, where one is informed that a cat is black because it is black, may be harmless, though irritating and useless; but the actual cases [in statements of evolutionary theory] are always harder to detect than this, and may darken counsel for a long time.
![The simplest case, where one is informed that a cat is black because it is black, may be harmless, though irritating and useless; but the actual cases [in statements of evolutionary theory] are always harder to detect](http://cdn.quoteddaily.com/images/norman-macbeth/the-simplest-case-where-one-is-informed-that-a-cat-is-black-because-it-is-black-may-be-harmless-though.jpg)