Charles Babbage,
Passages from the Life of a Philosopher
(1864)
“ When the work to be done is proportioned to the powers of the mind engaged upon it, the painful effect of interruption is felt as deeply by the least intellectual as by the most highly gifted. The condition which determines the maximum of interruption is,—that the mind disturbed, however moderate its powers, shall be working up to its full stretch. Finding, many years ago, the increasing interruption of my pursuits from street music, as it is now tolerated, I determined to endeavour to get rid of it by putting in force our imperfect law, as far it goes. ”
