James Boswell,
Boswell's Life of Johnson
“ A man cannot know modes of life as well in Minorca as in London; but he may study mathematicks as well in Minorca.' BOSWELL. 'I don't know, Sir: if you had remained ten years in the Isle of Col, you would not have been the man that you now are.' JOHNSON. 'Yes, Sir, if I had been there from fifteen to twenty-five; but not if from twenty-five to thirty-five.' BOSWELL. 'I own, Sir, the spirits which I have in London make me do every thing with more readiness and vigour. ”
