あらたふと青葉若葉の日の光
How glorious! The green leaves, young leaves, the sun sparkling season
(Translated by Center for International Research on the Japanese Economy, The University of Tokyo)
It's a haiku by 松尾芭蕉 Matsuo Bashō. 日の光 "hi no hikari" means "sunshine", and also refers to 日光 Nikkō, where he composed this haiku.