A healthy eye should be able to see whatever needs to be seen, not just green things. That's what diseased eyes do. A good ear and nose should be ready for whatever they hear or smell. A good stomach should handle all kinds of food, like a millstone grinding whatever you put in it. A sound mind should be ready for whatever happens. But someone who says "I hope my children live!" or "I hope everyone praises what I do!" is like an eye that only wants to see green things, or teeth that only want soft food.
A good eye must be good to see whatsoever is to be seen, and not green things only. For that is proper to sore eyes. So must a good ear, and a good smell be ready for whatsoever is either to be heard, or smelt: and a good stomach as indifferent to all kinds of food, as a millstone is, to whatsoever she was made for to grind. As ready therefore must a sound understanding be for whatsoever shall happen. But he that saith, O that my children might live! and, O that all men might commend me for whatsoever I do! is an eye that seeks after green things; or as teeth, after that which is tender.