“The course of true love never did run smooth.”
Love is described as complicated rather than frictionless, which makes the line a durable reminder against idealizing relationships.
Source details
A Midsummer Night’s Dream, Act I, Scene 1; Lysander says this to Hermia while describing the obstacles that repeatedly frustrate lovers. Verified in the scan-backed 1918 Yale Shakespeare edition edited by Willard Higley Durham; direct evidence resolves to the reviewed Act I transcription.