Among a warlike people, the quality of highest esteem is personal courage, and with the ostentatious display of courage are closely connected promptitude of offence and quickness of resentment. The Highlanders, before they were disarmed, were so addicted to quarrels, that the boys used to follow any publick procession or ceremony, however festive, or however solemn, in expectation of the battle, which was sure to happen before the company dispersed.

– Samuel Johnson, A Journey to the Western Islands of Scotland (1775).