"…as a basic focus, the dancers remain in physical touch, mutually supportive and innovative, meditating upon the physical laws relating to their masses: gravity, momentum, inertia and friction."

Steve Paxton talking about Contact Improvisation.

He also said

When an apple fell on his head, Isaac Newton was inspired to describe his three laws of motion. These became the foundation of our ideas about physics. Being essentially objective, Newton ignored what it feels like to be the apple