In sooth I know not why I am so sad. It wearies me, you say it wearies you; But how I caught it, found it, or came by it, What stuff 'tis made of, whereof it is born, I am to learn.
The Same, the Same: friend and foe are of one stuff; the ploughman, the plough, and the furrow, are of one stuff; and the stuff is such, and so much, that the variations of form are unimportant.
If it's a question about stuff that matters to you personally, like favorite food, favorite piece of knowledge, favorite animal, it's hard not to have an opinion and want to quantify things.