Answer:
We are two brothers on opposite sides of the road, but we never see each other. Who are we?
Gumby and yoga instructors have this in common.
What is it that no man ever saw, which never was, but always will be?
They come in many varieties: Red, Black, Dead, and Caspian to name a few.
What two letters in the alphabet say goodbye?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.