Answer:

1. "Those who have no deep ambitions, no clear understanding, and no faint things, have no great achievements." means:

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Without the spirit of concentrated study, there will be no wisdom to see everything; without obscure work, there will be no outstanding achievements.

no great aspiration, no sophistication; no silent devotion, no illustrious achieve

2. From the famous saying of Xunzi (Xun Kuang):

Therefore there is no darkness. Those who have great ambitions will not have great achievements, and those who have no embarrassment will not have great achievements. Those who follow the road will not come, and those who serve the two kings will not tolerate it. The eyes cannot see both ways and the ears cannot hear both ways. The snake has no legs and can fly, while the rat has five skills. "Poetry" says: "The corpse dove is in the mulberry, and its sons are seven. A gentleman's manners are one. His manners are one, and his heart is like a knot." Therefore, a gentleman is tied to one.

Full text translation:

Therefore, without the spirit of concentrated study, there will be no wisdom to see everything; without obscure work, there will be no outstanding achievements. Those who wander on the wrong road cannot reach their destination, and those who serve two monarchs at the same time cannot be accepted by both parties. The eyes cannot look at two things at the same time and see them all clearly, and the ears cannot hear two sounds at the same time and understand them all. The snake has no legs but can fly; the mole has five skills but is in trouble. "Poetry" says: "The cuckoo lives in the mulberry tree, and it feeds seven little birds. Those good gentlemen, stick to morality and justice. If you stick to morality and justice, your thoughts are like knots." So when a gentleman learns, he always Focus on one point.