Do every duty， and expect no reward for it.
尽一切职责，而不希望得到任何回报。
"Psychology must focus on the utility of mental operations."
Other holidays repose upon the past; Arbor Day proposes for the future.
读诗应当以心灵去感悟心灵，不能仅从字面意思去理解。
A company's greatest asset is its people; invest in them, and they will invest in the company.