Newtonâ€™s first law was actually Galilean idea. It was Galileo who first thought that once we succeed eliminating all the friction from the surface one object slides on the object would slide forever. Newton had only royal style of putting it: â€œSubjected to no force the object will preserve its uniform motion i.e. travel with constant speedâ€. But there is a catch. Galileo didnâ€™t have the entire force - picture in sight. Newton, later, in his third law stated that for every action force there is an equal and opposite reaction force. In the case of the sliding object the friction is only the reaction the object gets from the surface meaning that the action must come from its motion. Thereby, eliminating the friction from the surface would eliminate the motion of the object. My amendment to Newtonâ€™s first law would be: â€œSubjected to no force the object will perform no motionâ€. Even in this improved version, Newtonâ€™s first law is only a trivial case of one other more general law. That general law states: â€œThe displacement always takes the direction of the force causing itâ€. You might not like it because it comes from me, you might not like it because of the way I put it, but rest ashore; you obey this law all the time.