The first time a man saw the communication of motion by impulse, as by the shock of two billiard balls, he could not pronounce that the one event was connected: but only that it was conjoined with the other.
Gizakume batek bultzadazko mugimen-komunikatzea lehenengoz ikusi zuenean, bilar-bolen elkar-jotzean esaterako, ezin izan zuen gertaera bata bestearekin konektatuta dagoela aldarrikatu, elkartuta bakarrik baizik.