Christopher Morley's short essay "On Laziness" uses sarcasm and satire to critique the notion that laziness is a virtue. While claiming to write an essay praising laziness, Morley contradicts this by completing the essay, showing he does not actually believe idleness is good. Through ironic language and paradoxes, Morley aims to expose the absurdity of laziness and make slothful people see the error of their ways.