Diogenes of Sinope | Lucian, The Way to Write History 3
<blockquote>Such sights and sounds, my Philo, brought into my head that old anecdote about the Sinopean. A report that Philip was marching on the town had thrown all Corinth into a bustle; one was furbishing his arms, another wheeling stones, a third patching the wall, a fourth strengthening a battlement, every one making himself useful somehow or other. Diogenes having nothing to do — of course no one thought of giving him a job — was moved by the sight to gird up his philosopher’s cloak and begin rolling his tub-dwelling energetically up and down the Craneum; an acquaintance asked, and got, the explanation: ‘I do not want to be thought the only idler in such a busy multitude; I am rolling my tub to be like the rest.’
Source: http://lucianofsamosata.info/TheWayToWriteHistory.html</blockquote>