What did Boo Radley treasure most in the book "to kill a mockingbird"?
More than anything, Boo Radley treasures his privacy. He likes children, as evidenced by his gifts in the tree's knothole, and he certainly shows his protective side when he saves Jem and Scout from Bob Ewell, but he treasures his quiet life inside his home. Boo might be described in contemporary terms as an introvert, which means that his attempts to interact with the larger community might look different than the interactions of someone more socially-minded. Despite his quiet ways and his need for privacy, Boo is not strange and monstrous; he is just different. It is exactly this privacy that enables Boo to act on behalf of the children, because he is able to act on his own terms; when Boo is given the space to be who he is, the true Boo can be heroic.
It is evident through many instances in the novel "To Kill A Mocking Bird" that Boo Radley treasured Jem and Scout more than anything, even more so than he treasured his solitude. This is seen through the presents he leaves in the knothole of the tree, as it is pleasurable for him to see the happiness his gifts bring to Jem and Scout. In addition, Boo leaves his sacred solitude to help Jem and Scout when they encounter the ever so frightening Bob Ewell. Although it is never explicitly said, it can be inferred that on that fateful night Boo Radley murdered Bob Ewell in his heroic attempt to save Jem and Scout. In this instance Harper Lee shows the reader that despite his portrayal as a strange and dark figure through rumors and gossip, Boo is actually compassionate and kindhearted when it comes to Jem and Scout. Through Boo's actions one can ultimately come to the conclusion that Jem and Scout were whom he most treasured.