Quote 1
Now I think we are friends, this girl and me. On her birthday it was she who gave a gift to me. (35.21)
These are lines from The Standover Man, Max's loving gift to Liesel after she hugs him on his birthday. The hug, at that point, is more out of pity than love. But, The Standover Man changes all that.
Quote 2
From the toolbox the boy took out, of all things, a teddy bear.
He reached in through the torn windshield and placed it on the pilot's chest. (3.9, 3.10)
Though we don't know it until the end of the novel, that boy is Rudy. By this time in the novel, he's dedicated himself to acts of kindness and love, small and large. Ironically, a plane like the one he sees crashed here, with its pilot barely alive, is like the one that will drop a bomb on Himmel Street, ending Rudy's life.
Quote 3
Liesel observed the strangeness of her foster father's eyes. They were made of kindness, and silver. […] Upon seeing those eyes, understood that Hans Hubermann was worth a lot. (6.22)
We understand it too. The novel seems to argue that it's easy to be loving, when we take the time to see the worth in those around it. Of course, Hans makes this really easy.