Authors:

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