Letter from Newton to Henry Oldenburg, dated 18 November 1676
Sir
I promised to send you an answer to Mr Lucas this next Tuesday but I find I shall scarce finish what I have designed, so as to get a copy taken of it by that time, & therefore I beg your patience a week longer. I see I have made my self a slave to Philosophy, but if I get free of Mr Linus's buisiness I will resolutely bid adew to it eternally, excepting what I do for my privat satisfaction or leave to come out after me. For I see a man must either resolve to put out nothing new or to become a slave to defend it.
But to let this pass I beg the favour of you to let your servant convey this inclosed Mr Boyle, I not knowing well how to direct it to him. Sir I am
Your humble Servant
I. N.
Nov. 18. 1676.