If Newton had a waterfall, he would not have needed to be hit by an apple. The shining force of water in active mode lends eternal gravitas to any landscape.
Waterfalls suggest spirituality; solemn temples where creatures of all descriptions may observe their meditative moments.
Reflection aided by water may allow light to enter. Sermons of white noise can cleanse, irrespective of denomination. A strange thing that... learning how little the spirit needs to live and grow.