It's hardly in a body's pow'r,To keep, at times, frae being sour.
Robert Burns (1827). “The Works of Robert Burns: With an Account of His Life, and Criticism on His Writing ; to which are Prefixed Some Observations on the Character and Condition of the Scottish Peasantry by James Currie, M. D. ; with Many Additional Poems and Songs and an Enlarged and Corrected Glossary”, p.36
