As well might it be urged that the wild & uncultivated tree, hitherto yielding sour & bitter fruit only, can never be made to yield better: yet we know that the grafting art implants a new tree on the savage stock, producing what is most estimable both in kind & degree.
This metaphor really intrigued me; I think it is an interesting comparison that the founders made. It is quite poetic. I think that it is interesting to see that the founders assume it is impossible for a person without education to bear sweet and ripe fruit and only by tying them up to something "new" -- education in this case-- can they be estimable. While I do agree that education provides individuals with more knowledge therefore the ability to bear more fruits in their lives, I think that making such a sure statement does kind of bother me in a way. While the wild and uncultivated tree would most likely produce more sour and bitter fruits compared to the other trees, it does not mean that they only produce such vile fruits; in my perspective, they can also produce fruits estimable in kind and degree.