The river

Rivers and rivers can make people cut off each other, but can not cut off the heart and heart, no matter you go to the ends of the earth. My heart will always be with you.
Some things will change, but some things remain the same, such as our inner self, that is no matter how grinding, also can not be worn off. Just like a river, maybe over a long period of time, there will be some floating objects above, but through the mess, the original gurgling water inside.