exemplary

None writes so ill, that he gives not some thing exemplary, to follow, or flie. Now when I beginne this booke, I have no purpose to come into any mans debt; how my stocke will hold out I know not; perchance waste, perchance increase in use; if I doe borrow any thing of Antiquitie, besides that I make account that I pay it to posterity, with as much and as good: You shall still finde mee to acknowledge it, and to thanke not him onely that hath digg’d out treasure for mee, but that hath lighted mee a candle to the place.
[John Donne, Metempsycosis (1601)]

exemplary