Where history means nothing. Lessons are forgotten. Memories – of humanity, of all that is humane – are lost. - Steven Erikson

Evil is nothing but a word, an objectification where no objectification is necessary. Cast aside this notion of some external agency as the source of inconceivable inhumanity - the sad truth is our possession of an innate proclivity towards indifference, towards deliberate denial of mercy, towards disengaging all that is moral within us.
But if that is too dire , let's call it evil. And paint it with fire and venom.

Innocence is only a virtue, lass, when it is temporary. You must pass from it to look back and recognize its unsullied purity. To remain innocent is to twist beneath invisible and unfathomable forces all your life, until one day you realize that you no longer recognize yourself, and it comes to you that innocence was a curse that had shackled you, stunted you, defeated your every expression of living.

It is not enough to wish for a better world for the children. It is not enough to shield them with ease and comfort. Lostara Yil, if we do not sacrifice our own ease, our own comfort, to make the future's world a better one, then we curse our own children. We leave them a misery they do not deserve; we leave them a host of lessons unearned.