Tā gàojiè xuéshēng: qièwèn'érjìnsī, rén zài qízhōng yǐ.
He reminded the students: ask earnestly, reflect on what is near - humaneness lies within that.
Tips
history
From 《论语·子张》: 'study widely, hold firm to your purpose, ask earnestly, reflect on what is near - humaneness lies within.' Attributed to 子夏 (Zi Xia), a disciple of Confucius. 'Humaneness lies within' these four study habits.
usage
切 (qiè) here = 'earnestly / urgently,' not 'to cut.' 近思 = 'think about what is near,' i.e. don't leap to abstractions before grasping the immediate.