Heraclitus and Parmenides

Instinctively I want to say that everything changes and nothing really stays the same. But to say that is taking a huge assumption because certain things will always remain the same. The fact that my brother is my brother will never change. Maybe how we feel towards each other will fluctuate but the fact that he is my brother will remain the same. Another thing that is held to be true is the order of things, in a story you always have the beginning, middle, and end. Maybe in a different order, but this makes up a story. This is the same for the course of life. We are born we live and we die. It is a continuous cycle. There are certain things that never change, that will be true till the end of time.