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Sustainable quarrying means listening to the land as intently as we listen to shareholders.

The environment is not a mosaic of stimuli, but a field of forces in which every part is dynamically related to every other part.

我們如海鷗之與波濤相遇似地，遇見了，走近了。海鷗飛去，波濤滾滾地流開，我們也分別了。