# isolates himself

"keeps away from other people"

# quarrels with all sound judgment

This speaks of a person disagreeing with sound judgment as if "sound judgment" were a person he fought with. AT: "he disagrees with all sound judgment" (See: [[rc://en/ta/man/translate/figs-personification]])

# sound judgment

"good judgment" or "wise choices"

# A fool finds no pleasure in understanding, but only

"A fool does not care about understanding, but only about" This means the fool considers "understanding" the opposite of pleasure. AT: "A fool detests understanding and only finds pleasure in" (See: [[rc://en/ta/man/translate/figs-litotes]])

# but only in revealing what is in his own heart

This means that the fool only finds pleasure in telling other people what he feels and desires in his heart. AT: "but only in telling others what is in his own heart" (See: [[rc://en/ta/man/translate/figs-explicit]])

# what is in his own heart

The contents of a person's heart refers to the person's thoughts and feelings. AT: "what he thinks" (See: [[rc://en/ta/man/translate/figs-metonymy]])