Sextus Empiricus Pyrrhoniae Hypotyposes 3.10.80

[80] And if, on the other go hand, they shall assert that the moving thing moves all at once through a space that is small but not precisely determined, it will be open to us to adopt the sorites argument ¹ and keep constantly adding a hair’s-breadth of space to the breadth assumed. And if, then, they shall make a halt anywhere while we are pursuing this argument, they will be reverting to the monstrous theory of precise definition as before; while if they shall assent to the process of addition, we shall force them to grant that a thing can move all at once through the whole of the earth. Consequently, objects said to be in motion do not move by occupying a divisible interval all at once.