The fool doesn’t learn when wisdom is presented to him because he’s too full of himself to hear.
Prov. 12:15“The way of a fool is right in his own eyes, But a wise man is he who listens to counsel.”
Prov. 26:12“Do you see a man wise in his own eyes? There is more hope for a fool than for him.”
The fool doesn’t even learn even from his own mistakes though he suffers terrible consequences for his folly.
Prov. 17:10“A rebuke goes deeper into one who has understanding Than a hundred blows into a fool.”
Prov. 26:16“The sluggard is wiser in his own eyes Than seven men who can give a discreet answer. [sensibly - NKJV]”
The wise man doesn’t need to personally see the consequences of sin and folly, but who learns by hearing or reading wise counsel.
Prov. 10:8“The wise of heart will receive commands, But a babbling fool will be thrown down.”
Prov. 13:1“A wise son accepts his father’s discipline, But a scoffer does not listen to rebuke.”
Prov. 23:19“Listen, my son, and be wise, And direct your heart in the way.”
The wisest of all is the one who hears and reads the true wisdom, the wisdom of God in His revelation, to learn the ways of life.
Ps. 19:7“The testimony of the LORD is sure, making wise the simple.”