"I remember. He meant the Kingdom was over, the Kingdom of Heaven, it was all finished. We shouldn't live as if it mattered more than this life in this world, because where we are is always the most important place."
"He said we had to build something…"
"That's why we needed our full life, Pan... we wouldn't have been able to build it. No one could if they put themselves first. We have to be all those difficult things like cheerful and kind and curious and patient, and we've got to study and think and work hard, all of us, in all our different worlds, and then we'll build…"

Lyra to Pan in Ch. 38 : The Botanic Garden - His Dark Materials - The Amber Spyglass (2000)