"[I was] very fond of desultory reading and of natural history, and not excelling in any form of sport. Owing to my asthma I was not able to go to school, and I was nervous and self-conscious, so that as far as I can remember my belief is that I was rather below than above my average playmate in point of leadership; though as I had an imaginative temperament this sometimes made up for my other short-comings. Altogether, while, thanks to my father and mother, I had a very happy childhood I am inclined to look back at it with some wonder that I should have come out of it as well as I have!" -T.R.
Also, JFK comes off as more ESTP to me. I'd also label GWBush an ESTP, though ESFP is very easy to see as well. definitely not an N.