A piece of rotten wood cannot be turned into something beautiful. That is, a person whose spirit is rotten cannot benefit from education.

meaningless

nonsense / meaninglessness

a surname

action; behavior

to act

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

(colloquial) feces, excrement / (by extension) shit, crap, garbage, trash