It was his peculiar happiness that he scarcely ever found a stranger whom he did not leave a friend; but it must likewise be added, that he had not often a friend long without obliging him to become a stranger. – Samuel Johnson
The mind is refrigerated by interruption; the thoughts are diverted from the principal subject; the reader is weary, he suspects not why; and at last throws away the book, which he has too diligently studied. – Samuel Johnson

