“... we met with more closed doors than open ones -- and the people who answered our knocks were invariably older. Young people didn't aswner the door to strangers, who would undoubtedly be trying to sell something, any more than they would answer the telephone to telemarketers once Caller ID came along. The only people we encountered going door-to-door were the ones old enough to remember when that's the way the world worked.”

“...I also have an extended family. The people who stayed. The people who became more than friends; the people who open the door when I knock. That's what it all boils down to. The people who have to open the door, not because they always want to but because they do.”

“I believe death is only a door. One closes, and another opens. If I were to imagine heaven, I would imagine a door opening. And he would be waiting for me there.”

“Oskar knew people would catch that trolley anyhow. Doors closed, no stops, machine guns on walls—it wouldn’t matter. Humans were incurable that way. People would try to get off it, someone’s loyal Polish maid with a parcel of sausage. And people would try to get on, some fast-moving athletic young man like Leopold Pfefferberg with a pocketful of diamonds or Occupation złoty or a message in code for the partisans. People responded to any slim chance, even if it was an outside one, its doors locked shut, moving fast between mute walls.”

“When one door closes another door opens; but we so often look so long and so regretfully upon the closed door, that we do not see the ones which open for us.”

“The doors of the world are opened to people who can read.”