"These, sir, are the chief of the reasons which have been urged to me for staying here some time longer & which I thought so good that I determined to acquaint you with them & in the meanwhile [I] will employ my time to the best advantage till I have your opinion of them. I am Dr Sir Your most affecte & Dutyfull Son,"
January 1, 1970
https://en.wikiquote.org/wiki/Joseph_Black