“Idleness is sweet, and its consequences are cruel.”
John Quincy Adams (1767–1848) American politician, 6th president of the United States (in office from 1825 to 1829)
La molesse est doce, et sa suite est cruelle.
Attributed as a diary entry, as quoted in Respectfully Quoted : A Dictionary of Quotations (1992) by Suzy Platt