Answer:
I always follow my brother but you cannot see me, only him. You cannot hear him but you can hear me. What are we?
I'm tall in the morning and short in the noon. I disappear at night but I will be back soon.
I bubble and laugh and spit water in your face. I am no lady, and I don't wear lace.
To cross the water I'm the way, for water I'm above. I touch it not and, truth to say, I neither swim nor move.
Halo of water, tongue of wood. Skin of stone, long I've stood. My fingers short reach to the sky. Inside my heart men live and die.
You can always find me in the past. I am created in the present, but the future can not change me. What am I?