Having thought it right to leave behind me some account of my friends and benefactors, it is in a manner necessary that I also give some account of myself; and as the like has been done by many persons, and for reasons which posterity has approved, I make no further apology for following their example. If my writings in general have been useful to my contemporaries, I hope that this account of myself will not be without its use to those who may come after me, and especially in promoting virtue and piety, which, I hope I may say, it has been my care to practise myself, as it has been my business to inculcate them upon others.

Memoirs of the Rev. Dr. Joseph Priestly (1809). p. 1