There are things which some people never attempt during their whole lives, but one of these is not poetry. Poetry attacks all human beings sooner or later, and, like the measles, is mild or violent according to the age of the sufferer.
Mark TwainEvolution is the law of policies: Darwin said it, Socrates endorsed it, Cuvier proved it and established it for all time in his paper on The Survival of the Fittest. These are illustrious names, this is a mighty doctrine: nothing can ever remove it from its firm base, nothing dissolve it, but evolution.
Mark Twain