Although much remains obscure, and will long remain obscure, … I am convinced that Natural Selection has been the main but not exclusive means of modification.
It has often and confidently been asserted, that man's origin can never be known: but ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.‘’
The subject may appear an insignificant one, but we shall see that it possesses some interest; and the maxim "de minimis lex non curat," does not apply to science.‘’
