" Not one man in a thousand has the accuracy of     eye and judgment sufficient to become an eminent    breeder.
	If gifted with these qualities, and he studies his   subject for years, and devotes his lifetime to it with   an indomitable perseverance, he will succeed, and   may make great improvements; if he wants in any of   these qualities, he will assuredly fail."   Charles Darwin, Origin of The Species, 1859