Things in nature change in variously many ways. Changes like day to night, rainy to bright weather are ordinary daily changes, but sometimes sudden changes like tornadoes, wildfires, volcanic eruptions, unforeseen accidents break out. But things keep their identities like the water is the water, the mountain is the mountain.

 
 
 

The earth usually doesn't move, but it shakes when an earthquake occurs. It is the earth all the time.

 

That is, the words in the red circle show that steady state and changing state, and the whole thing. Those are the characteristic states of all existence from the smallest creature to the whole universe.


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