You may know that a cascade of water can wear away stone, but you can't predict what shape the rock will take at any given moment.

You may know that a cascade of water can wear away stone, but you can't predict what shape the rock will take at any given moment.

你可能知道瀑布会把石头冲坏，但你无法预测石头在任何时候会变成什么形状。

-- Carolyn Parkhurst 卡罗琳·帕克丝特