(in English): Aim of present paper is to reconstruct and compare Aristotle's solution of Zeno's paradoxes of motion from Books VI and VIII of his Physics. Aristotle claims that there is difference between these two solutions. There is difference in charakter of question which is posed by Zeno. In book VI. the question is concerning the possibility of traversing infinite distance in finite time. In book VIII. this question is asked about time itself. It is here, in book VIII, where we should find the right solution to paradoxes of motion. In this paper I shall look into the nature of this difference between solution in book six and in book VIII, and I will find out if there si some consquence for Aristotle's conception of magnitudes.