A Definition (n.) can imprint complex ideas never before in the mind — a statue can be explained to a blind man in words, though a picture cannot.
A Definition (n.) grows more precise as more coexisting qualities are united under one name, but never thereby more capable of universal certainty about qualities left outside that idea.
A Definition (n.) cannot overpower constant experience: define the soul as a substance that always thinks, and you only make men suspect they have no souls.
A Definition (n.) cannot go all the way down: if the terms of every definition were still to be defined by another, where at last should we stop?
Definition (n.) of the word "man" are not exact enough to win consent where they would be needed most — in determining life and death, baptism or no baptism.
A Definition (n.) can be a joke at the asker's expense: to say extension is having parts outside parts is like telling someone a fibre is a thing made of fibres.
A Definition (n.) repeated as a solemn truth is playing with sounds: to say gravely "all gold is fusible" is no more instructive than "gold is yellow."
A Definition (n.) by genus and differentia is a shortcut for quickness and dispatch, not a law of thought: "rational animal" just resolves into a list of simple ideas.
A Definition (n.) is the only way the precise meaning of moral words can be known — and a way that leaves no room for contest; to refuse it is a want of ingenuousness.
A Definition (n.) is wrongly demanded of every word: much wrangling comes from some demanding definitions of terms that cannot be defined, and from definitions by rule that leave the hearer no clearer than before.
A Definition (n.) is only the explaining of one word by several others; languages are not made by the rules of logic, and those who made the genus-and-differentia rule gave us few definitions that obey it.