The safe and general antidote against sorrow is employment. It is commonly observed, that among soldiers and seamen, though there is much kindness, there is little grief; they see their friend fall without any of that lamentation which is indulged in security and idleness, because they have no leisure to spare from the care of themselves; and whoever shall keep his thoughts equally busy will find himself equally unaffected with irretrievable losses.
Samuel Johnson (1810). “The Works of Samuel Johnson, LL.D.: With An Essay on His Life and Genius”, p.306