important, weighty / valuable

importance, weight / value

to make (someone) learn

to be accustomed to, to always ...

child

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

culture

(と〜) thinking that […] (with the next clause explaining that the truth is contrary to expectations)