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]])
# 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]])