Water. Moveable and light. Fills what needs to be filled, cleans what needs to be cleaned. The universal. Everywhere but still rare. Living, changing, running and supporting.

vs

Rock. Immovable and heavy. Dense and unyielding, it can only be worn down or chipped off. Everywhere, not rare, and not of real value. Dead, stagnant, and useless.

Winner: I’d rather be water.