I would say the answer is "harbor". This word is usually used as a noun; but in this case, it is a verb that means to provide shelter to someone or something, to keep someone safe, but also to have something in mind and think about it. This word is purposefully chosen and fits into Whitman's well-intended, philanthropic and inclusive worldview.
The theme of believing in the good of people even at the worst of times is one that is prevalent in The Diary of Anne Frank. Allthough Anne is enduring horrors we can't even imagine, she believes that everything will be alright in the end. One clear example of goodness is the way in which Otto Frank’s four employees: Miep Gies, Johannes Kleiman, Victor Kugler and Bep Voskuijl agree to help the family hide despite the risk involved in helping jews, which could result in imprisonment, deportation and even being shot. Bep's father was also a big help, and cherished by the people living in the Annex. Although there are conflicts between the very different people living and hiding together, they all contribute to make a home and end up being a big family, helping each other bear the abominations going outside their safe space.
