“It is always important to know when something has reached its end. Closing circles, shutting doors, finishing chapters, it doesn't matter what we call it; what matters is to leave in the past those moments in life that are over.”

Source: The Storyteller

"Tentative (First Model)" Definitions of Poetry" in Complete Poems (1950)

Lyra to Pan in Ch. 38 : The Botanic Garden
Source: His Dark Materials, The Amber Spyglass (2000)
Context: "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…"

Diary of an Unknown (1988)

Variant: It's called mind over matter. If we don't mind, it doesn't matter.
Source: Room (novel) (2010)

Source: Loving and Leaving the Good Life (1992), p. 1

Referring to his position as 'the spare' behind elder brother William (before William had children of his own)
Source: Seward, Ingrid. William and Harry. London: Arcade, 2003. ISBN: 9781559706902.

London: Coronet Books, 1984, p. 316
The speaker is an eighty-year-old Mother Superior explaining why she allowed the burial in the convent cemetery of a foreign woman, a collaborator in a charitable enterprise, who was an unbeliever.
The World Is Made of Glass (1983)

Source: Stotan!