读书破万卷，下笔如有神。
After reading ten thousand books, writing flows like divine inspiration.
—— 杜甫
Source: 奉赠韦左丞丈二十二韵(Twenty-two Rhymes)
Background
From Du Fu's poetry, emphasizing the important role of reading and learning in improving writing ability.
Interpretation
Only through extensive reading and accumulation can one write with flowing thoughts and inspiration. The accumulation of knowledge is the source of creative inspiration.