The cause of the downward motion of heavy bodies, such as the element earth, was related to their nature, which caused them to move downward toward the center of the universe, which was their natural place.
Cauza mișcării în jos a corpurilor grele, cum ar fi elementul pământ, era legată de natura lor, ceea ce le făcea să se deplaseze spre centrul universului, care era locul lor natural.