Some things will last forever. Somethings change too quickly to be seen. Some things move between one phase and an other. It is just temporary.
Water is fluid and full of motion at room temperature. In the heat of the earth the water becomes steam. In the dead of winter the fluidity of water becomes motionless.
Wet snowflakes fall from the sky moving from one to another. Hitting the wet cement it quickly transforms its alternative self.
It sometimes it is all just moment between one phase and the next.