The dialectical sentence about learning and thinking in The Analects of Confucius is

(1) Learning without thinking is useless, and thinking without learning is dangerous (emphasis: useless)

(2) ... Night now gives way to the ocean of the sun, and the old year melts in freshness.

(3) The deceased is like a husband, staying with him day and night (emphasis: death)

(4) a trip to the sun and the moon, if you go out; Star Han is talented, if you are not among them.

(5) Be quiet to cultivate one's morality, and be frugal to cultivate one's morality.