Why did the chicken cross the road?

Kindergarden teacher: „To get to the other side.“
Plato: „For the greater good.“
Aristotle: „It is the nature of chickens to cross roads.“
Martin Luther King: „I envision a world where all chickens will be free to cross roads without having their motives called into question.“
Isaac Newton: „Chickens at rest tend to stay at rest, chickens in motion tend to cross roads.“
Albert Einstein: „Whether the chicken crossed the road or the road moved beneath the chicken depends on your frame of reference.“
Captain James T. Kirk: „To boldly go where no chicken has gone before.“
Werner Heisenberg: „We are not sure which side of the road the chicken was on, but it was moving very fast.“
Wolfgang Pauli: „There already was a chicken on this side of the road.“

Einfach, aber ganz nett…. Physikerwitze eben.