Melissus
Melissus was a pupil of Parmenides. He put forth an argument that movement was impossible because an object is a being, and if it were to move it would have to move into empty space, which is either being or unbeing. If empty space is unbeing, then it doesn't exist. If space is being then there is already being there and the object cannot move into a position that is already occupied by being. So nothing really moves.
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