una rondine non fa primavera

== Italian == === Etymology === Literally, “one swallow doesn't make a spring”, a calque of Ancient Greek μία χελιδὼν ἔαρ οὐ ποιεῖ (mía khelidṑn éar ou poieî). === Proverb === una rondine non fa primavera one swallow does not a summer make