The official Pokémon movie blog has updated. Translations of the new entry follows:

Quote Central: Memorable Lines from Pokémon Movies #8



Worrying too much will make you lose your luster

-Diancie,
"The Cocoon of Destruction and Diancie", 2014

When the elder, Di, preaches to Diancie about the seriousness of the Sacred Diamond losing its radiance, she answers back with this line.

This quote was submitted by "Mamiri". Thank you for your contribution!



We want to hear your "Memorable Lines from Pokémon Movies"
We are now taking suggestions for "Memorable Lines" from past Pokémon movies!
We want your favorite "wise words", "inspired sayings"... or even utter nonsense.
To send in a suggestion, choose "Quote Central" from the Apply page and list the following:
"Movie title" - "Name of character or Pokémon that said the line" - "The line itself"
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Source: http://www.pokemon-movie.jp/pokemovie_ch/?p=781