Come back to criticise him when you achieve at least one tenth of what he did.
How do you know what I have achieved? Have you achieved enough to comment here on various topics? You set the standard, you? Don't think so.
Hard enough to save even one child - how many options do you think he had?
It was even harder for Polish people to save themselves, to save other Polish or to save Jews and yet Polish people did not look twice but saved anyone they could. Given the scorn and horrible treatment Jews have served Polish people for centuries it would have been much much harder to want to help a Jew, yet Polish people, being the way we are, have helped Jews, even risking their lives for them, somehow finding way to do it. If Korczak truly wanted to help Polish children he would have, no excuse for a man in his position. Selective help is no real help. I just feel sorry for the Polish children who were left out by Korczak.
Anyone who gives their life to save others, both known as well as unknown to them, is a hero!
No, not when the "hero" helps selectively on the basis on ethnicity.
He wanted to join the army after the outbreak of the war but was refused due to his age.
He could have joined the underground army, he could have joined other actions - many options, but I guess you need to feel the need to help.In case of Polish children he not feel the urge enough to help.