Later on, when you are feeling better, I will send an outline of some work I intend to do on conic sections; I think it would be of great benefit to you to work with me on this. I have always had confidence in your ability. You are young yet, but, given time and plenty of study, you should make a place for yourself in the world of mathematics.
I think that the work I have in mind for you should prove stimulating.
Most sincerely,
Isaac Barrow, Ph.D.
16 November 1666
London
Dear Mr. Newton:
It would most certainly be quite convenient for you to do your work there at Woolsthorpe.
An explanation of the work we are trying to do and some of the problems we are up against will be despatched to you as soon as possible.
Sincerely,
Ballister-ffoulkes