Definition (n.) can be shameless work: we keep saying 'we know' and 'we understand' while admitting we do not yet know what knowing is.
Definition (n.) can escape a man who knows the thing perfectly well: Laches knew what courage was and still could not pin it down in words.
A Definition (n.) must say what a thing is, not what it is of: naming cobbling and carpentry counts the branches of knowledge without saying what knowledge itself is.
A Definition (n.) must give a thing's nature, not one of its qualities: to say the pious is god-loved is to name something that happens to it, not what it is.
A Definition (n.) is only the second rung: for any real thing there is its name, its definition, its image, our knowledge of it — and only fifth, the thing itself.
Definition (n.) comes first: if you do not know what a thing is, you cannot know its qualities, any more than you can say whether a stranger is handsome or rich.
A Definition (n.) is what saves two people from agreeing on a word while meaning different things: agreement must be about the thing itself, by way of an account, not merely about the name.
A Definition (n.) is never hunted for its own sake: no one with sense chases the definition of weaving to learn about weaving; the chase is training for thinking about everything.
A Definition (n.) must come first, or you miss your target altogether: ordinary people don't see that they don't know the nature of their subject, and so end up in conflict with themselves and each other.