Full Idea
Time measures at once the change and the being of change, and this is what it is, for the change, to be in time, viz. its being's being measured. …This is what it is to be in time: their being's being measured by time.
Gist of Idea
Change only exists in time through its being temporally measure
Source
Aristotle (Physics [c.337 BCE], 221a05)
Book Reference
Aristotle: 'Physics Books III and IV', ed/tr. Hussey,Edward [OUP 1983], p.47
A Reaction
Among other things, this would presumably mean that animals are unaware of change, which seems unlikely. He may have a relaxed and intuitive (rather than precise) concept of 'measured'.