Rocks are solid and have a rigid form. They have a definite structure. While on the other hand, water doesn’t have well-defined boundaries. It is as real as a rock, and yet its permanence is not defined by its shape. Rocks don’t change their shape until some physical effort is applied to do so. A rock is similar in its form in a bowl as it is in a vase.
"Empty your mind! Be formless! Shapeless... Like water.
Now, you put water into a cup, it becomes the cup. You put water into a bottle, it becomes the bottle. You put water in the teapot, it becomes the teapot.
Now, water can flow, or it can crash. be water my friend!"
Mental Model: Rock Logic vs. Water Logic
"Empty your mind! Be formless! Shapeless... Like water.
Now, you put water into a cup, it becomes the cup. You put water into a bottle, it becomes the bottle. You put water in the teapot, it becomes the teapot.
Now, water can flow, or it can crash. be water my friend!"
— Bruce Lee
https://www.youtube.com/watch?v=cJMwBwFj5nQ